Abstract
An FDD/CDMA transmission/reception system includes a CDMA transmitter and a CDMA receiver. The CDMA transmitter includes a plurality of transmission antennas signal transmission units for transmitting transmission signals weighted by different values to the respective transmission antennas and pilot signal transmission units for transmitting a plurality of different pilot signals to the respective transmission antennas. The CDMA receiver includes a reception unit for obtaining one received signal from the transmission signals from the plurality of transmission antennas of the CDMA transmitter in consideration of reception quality and a unit for transmitting antenna control signals corresponding to reception power values of the received pilot signals to the CDMA transmitter.
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Specification Information
Specification Information
Technologies
Family Information
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| Publication No | Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | Status | National Phase Entries | |||||
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Technologies
Multiple access
Product
Use Cases
Wireless communication
Services
Claim
1. An FDD/CDMA transmission/reception system comprising:
a CDMA transmitter and a CDMA receiver, which are connected with a radio link,
(a) said CDMA transmitter comprising:
a plurality of transmission antennas,
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal,
an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and
(b) said CDMA receiver comprising:
a reception device which receives said pilot signals,
an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and
a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.', 'a CDMA transmitter and a CDMA receiver, which are connected with a radio link,
(a) said CDMA transmitter comprising:
a plurality of transmission antennas,
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal,
an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and
(b) said CDMA receiver comprising:
a reception device which receives said pilot signals,
an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and
a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.', '(a) said CDMA transmitter comprising:
a plurality of transmission antennas,
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal,
an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and', 'a plurality of transmission antennas,', 'a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal,', 'an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and', 'a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and', '(b) said CDMA receiver comprising:
a reception device which receives said pilot signals,
an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and
a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.', 'a reception device which receives said pilot signals,', 'an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and', 'a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.
2. The FDD/CDMA transmission/reception system according to claim 1, wherein the user signal is weighted by the one or more antenna control signals and the pilot signals are not weighted by the one or more antenna control signals.
3. The FDD/CDMA transmission/reception system according to claim 1, wherein the user signal is spread with a CDMA code before being weighted by the one or more antenna control signals.
4. An FDD/CDMA transmission/reception system comprising:
a CDMA transmitter and a CDMA receiver, which are connected with a radio link,
(a) said CDMA transmitter comprising:
a plurality of transmission antennas,
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with a CDMA multiplexing method,
an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and
(b) said CDMA receiver comprising:
a reception device which receives said pilot signals,
an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and
a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.', 'a CDMA transmitter and a CDMA receiver, which are connected with a radio link,
(a) said CDMA transmitter comprising:
a plurality of transmission antennas,
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with a CDMA multiplexing method,
an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and
(b) said CDMA receiver comprising:
a reception device which receives said pilot signals,
an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and
a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.', '(a) said CDMA transmitter comprising:
a plurality of transmission antennas,
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with a CDMA multiplexing method,
an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and', 'a plurality of transmission antennas,', 'a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with a CDMA multiplexing method,', 'an antenna control signal receiving device which receives via said radio link one or more antenna control signals generated by said CDMA receiver, and', 'a signal transmission device which generates the user signal weighted by the one or more antenna control signals; and', '(b) said CDMA receiver comprising:
a reception device which receives said pilot signals,
an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and
a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.', 'a reception device which receives said pilot signals,', 'an antenna control signal device which generates said one or more antenna control signals for weighting transmission signals from said transmission antennas based on the received pilot signals, and', 'a transmitter which transmits the one or more antenna control signals to said CDMA transmitter and controls transmitting signals from the respective transmission antennas of said CDMA transmitter.', '5. The FDD/CDMA transmission/reception system according to claim 4, wherein the user signal is weighted by the one or more antenna control signals and the pilot signals are not weighted by the one or more antenna control signals.', '6. The FDD/CDMA transmission/reception system according to claim 4, wherein the user signal is spread with a CDMA code before being weighted by the one or more antenna control signals.', '7. An FDD/CDMA communication apparatus comprising:
a plurality of transmission antennas;
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal;
an antenna control signal receiving device which receives one or more antenna control signals via a radio link; and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals.', 'a plurality of transmission antennas;', 'a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal;', 'an antenna control signal receiving device which receives one or more antenna control signals via a radio link; and', 'a signal transmission device which generates the user signal weighted by the one or more antenna control signals.', '8. The FDD/CDMA communication apparatus according to claim 7, wherein the user signal is weighted by the one or more antenna control signals and the pilot signals are not weighted by the one or more antenna control signals.', '9. The FDD/CDMA communication apparatus according to claim 7, wherein the user signal is spread with a CDMA code before being weighted by the one or more antenna control signals.', '10. An FDD/CDMA communication apparatus comprising:
a plurality of transmission antennas;
a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with CDMA multiplexing method;
an antenna control signal receiving device which receives one or more antenna control signals via a radio link; and
a signal transmission device which generates the user signal weighted by the one or more antenna control signals.', 'a plurality of transmission antennas;', 'a pilot signal transmission device which generates a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with CDMA multiplexing method;', 'an antenna control signal receiving device which receives one or more antenna control signals via a radio link; and', 'a signal transmission device which generates the user signal weighted by the one or more antenna control signals.', '11. The FDD/CDMA communication apparatus according to claim 10, wherein the user signal is weighted by the one or more antenna control signals and the pilot signals are not weighted by the one or more antenna control signals.', '12. The FDD/CDMA communication apparatus according to claim 10, wherein the user signal is spread with a CDMA code before being weighted by the one or more antenna control signals.', '13. In an FDD/CDMA transmission/reception system having a CDMA transmitter having a plurality of transmission antennas and a CDMA receiver, the CDMA transmitter and the CDMA receiver being connected with a radio link, an FDD/CDMA transmission/reception method comprising:
(a) in the CDMA transmitter:
generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal,
receiving via said radio link one or more antenna control signals generated by the CDMA receiver, and
generating the user signal weighted by the one or more antenna control signals;
(b) in the CDMA receiver:
receiving the pilot signals,
generating the one or more antenna control signals for weighting transmission signals from the transmission antennas based on the received pilot signals, and
transmitting the one or more antenna control signals to the CDMA transmitter and controlling transmitting signals from the respective transmission antennas of the CDMA transmitter.', '(a) in the CDMA transmitter:
generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal,
receiving via said radio link one or more antenna control signals generated by the CDMA receiver, and
generating the user signal weighted by the one or more antenna control signals;', 'generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal,', 'receiving via said radio link one or more antenna control signals generated by the CDMA receiver, and', 'generating the user signal weighted by the one or more antenna control signals;', '(b) in the CDMA receiver:
receiving the pilot signals,
generating the one or more antenna control signals for weighting transmission signals from the transmission antennas based on the received pilot signals, and
transmitting the one or more antenna control signals to the CDMA transmitter and controlling transmitting signals from the respective transmission antennas of the CDMA transmitter.', 'receiving the pilot signals,', 'generating the one or more antenna control signals for weighting transmission signals from the transmission antennas based on the received pilot signals, and', 'transmitting the one or more antenna control signals to the CDMA transmitter and controlling transmitting signals from the respective transmission antennas of the CDMA transmitter.', '14. The FDD/CDMA transmission/reception method according to claim 13, further comprising: weighting the user signal by the one or more antenna control signals and not weighting the pilot signals by the one or more antenna control signals.', '15. The FDD/CDMA transmission/reception method according to claim 13, further comprising: spreading with a CDMA code the user signal before weighting the user signal by the one or more antenna control signals.', '16. In an FDD/CDMA transmission/reception system having a CDMA transmitter having a plurality of transmission antennas and a CDMA receiver, the CDMA transmitter and the CDMA receiver being connected with a radio link, an FDD/CDMA transmission/reception method comprising:
(a) in the CDMA transmitter:
generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with a CDMA multiplexing method,
receiving via said radio link one or more antenna control signals generated by the CDMA receiver, and
generating the user signal weighted by the one or more antenna control signals;
(b) in the CDMA receiver:
receiving the pilot signals,
generating the one or more antenna control signals for weighting transmission signals from the transmission antennas based on the received pilot signals, and
transmitting the one or more antenna control signals to the CDMA transmitter and controlling transmitting signals from the respective transmission antennas of the CDMA transmitter.', '(a) in the CDMA transmitter:
generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with a CDMA multiplexing method,
receiving via said radio link one or more antenna control signals generated by the CDMA receiver, and
generating the user signal weighted by the one or more antenna control signals;', 'generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with a CDMA multiplexing method,', 'receiving via said radio link one or more antenna control signals generated by the CDMA receiver, and', 'generating the user signal weighted by the one or more antenna control signals;', '(b) in the CDMA receiver:
receiving the pilot signals,
generating the one or more antenna control signals for weighting transmission signals from the transmission antennas based on the received pilot signals, and
transmitting the one or more antenna control signals to the CDMA transmitter and controlling transmitting signals from the respective transmission antennas of the CDMA transmitter.', 'receiving the pilot signals,', 'generating the one or more antenna control signals for weighting transmission signals from the transmission antennas based on the received pilot signals, and', 'transmitting the one or more antenna control signals to the CDMA transmitter and controlling transmitting signals from the respective transmission antennas of the CDMA transmitter.', '17. The FDD/CDMA transmission/reception method according to claim 16, further comprising: weighting the user signal by the one or more antenna control signals and not weighting the pilot signals by the one or more antenna control signals.', '18. The FDD/CDMA transmission/reception method according to claim 16, further comprising: spreading with a CDMA code the user signal before weighting the user signal by the one or more antenna control signals.', '19. In an FDD/CDMA communication apparatus having a plurality of transmission antennas, a method comprising:
generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal;
receiving one or more antenna control signals via a radio link; and
generating the user signal weighted by the one or more antenna control signals.', 'generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal;', 'receiving one or more antenna control signals via a radio link; and', 'generating the user signal weighted by the one or more antenna control signals.
20. The method according to claim 19, further comprising:
weighting the user signal by the one or more antenna control signals and not weighting the pilot signals by the one or more antenna control signals.', 'weighting the user signal by the one or more antenna control signals and not weighting the pilot signals by the one or more antenna control signals.
21. The method according to claim 19, further comprising:
spreading with a CDMA code the user signal before weighting the user signal by the one or more antenna control signals.', 'spreading with a CDMA code the user signal before weighting the user signal by the one or more antenna control signals.
22. In an FDD/CDMA communication apparatus having a plurality of transmission antennas, a method comprising:
generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with CDMA multiplexing method;
receiving one or more antenna control signals via a radio link; and
generating the user signal weighted by the one or more antenna control signals.', 'generating a plurality of different pilot signals assigned to respective ones of the plurality of transmission antennas, each of the pilot signals being combined with a user signal in accordance with CDMA multiplexing method;', 'receiving one or more antenna control signals via a radio link; and', 'generating the user signal weighted by the one or more antenna control signals.
23. The method according to claim 22, further comprising:
weighting the user signal by the one or more antenna control signals and not weighting the pilot signals by the one or more antenna control signals.', 'weighting the user signal by the one or more antenna control signals and not weighting the pilot signals by the one or more antenna control signals.
24. The method according to claim 22, further comprising:
spreading with a CDMA code the user signal before weighting the user signal by the one or more antenna control signals.', 'spreading with a CDMA code the user signal before weighting the user signal by the one or more antenna control signals.']
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Explicitly disclosed patent:openly and comprehensibly describes all details of the invention in the patent document.
Implicitly disclosed patent:does not explicitly state certain aspects of the invention, but still allows for these to be inferred from the information provided.
Basis patent:The core patent in a family, outlining the fundamental invention from which related patents or applications originate.
Family member:related patents or applications that share a common priority or original filing.