Abstract
The accuracy of channel estimation when receiving signals from a plurality of antennas is improved. The base station side transmission apparatus includes a preamble A generation unit 010, a preamble B generation unit 011, phase rotation units 012 and 013, multiplex units 014 and 015, an error correction coding unit 016, and an S / P conversion unit 017. Mapping unit 018, changeover switch 019, IDFT unit (IFFT may be used) 020, 026, P / S conversion units 021 and 027, GI (Guard Interval) insertion units 022 and 028, D / A Conversion units 023 and 029, radio transmission units 024 and 030, and antenna units 025 and 031 are included. Preamble A generation section 010 and preamble B generation section 011 respectively generate preamble A and preamble B (see the packet format in FIG. 1), preamble A is output to multiplex sections 014 and 015, and preamble B is Output to phase rotation units 012 and 013. In the phase rotation units 012 and 013 to which the preamble B is input, continuous phase rotation is given to each subcarrier of the preamble B. In the base station side transmitting apparatus according to the present embodiment, phase rotation unit 012 does not give phase rotation, and phase rotation unit 013 gives phase rotation only to preamble B.
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| Technology | Declaration Information | Specification Information | Explicitly Disclosed | Patent Type | |||||
|---|---|---|---|---|---|---|---|---|---|
| Declaration Date | Declaration Reference | Declaring Company | Specification Number | ||||||
| 4G | 29/07/2012 | ISLD-201207-006 | SHARP CORPORATION | No | Family Member | ||||
| 4G | 29/07/2012 | ISLD-201207-006 | SHARP CORPORATION | Yes | Family Member | ||||
| 4G | 21/10/2020 | ISLD-202010-010 | SHARP CORPORATION | No | Family Member | ||||
| 4G | 21/10/2020 | ISLD-202010-010 | SHARP CORPORATION | Yes | Family Member | ||||
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| WO2006075733A1 | 4G | 29/07/2012 | ISLD-201207-006 | SHARP CORPORATION | Yes | Basis Patent | ||||
| WO2006075733A1 | 4G | 29/07/2012 | ISLD-201207-006 | SHARP CORPORATION | Yes | Family Member | ||||
| WO2006075733A1 | 4G | 21/10/2020 | ISLD-202010-010 | SHARP CORPORATION |
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| JP2010022023A | 4G | 29/07/2012 | ISLD-201207-006 | SHARP CORPORATION | Yes | Basis Patent | ||||
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| JP2010022023A | 4G | 21/10/2020 | ISLD-202010-010 | SHARP CORPORATION |
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| JP4615059B2 | 4G | 29/07/2012 | ISLD-201207-006 | SHARP CORPORATION | Yes | Basis Patent | ||||
| JP4615059B2 | 4G | 29/07/2012 | ISLD-201207-006 | SHARP CORPORATION | Yes | Family Member | ||||
| JP4615059B2 | 4G | 21/10/2020 | ISLD-202010-010 | SHARP CORPORATION |
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