CN101138183A

5G,4G

Title

COMMUNICATION DEVICE

Application Number:

CN2006808027

Publication Date:

05-03-2008

Current Assignee:

SHARP CORPORATION

Family ID:

36677753

Application Date:

16-01-2006

Declaring Company:

SHARP CORPORATION

Publication Country:

US

Priority Date:

17-01-2005

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Title

COMMUNICATION DEVICE

Application Number:

CN2006808027

Family ID:

36677753

Publication Country:

US

Publication Date:

05-03-2008

Application Date:

16-01-2006

Priority Date:

17-01-2005

Current Assignee:

SHARP CORPORATION

Declaring Company:

SHARP CORPORATION

View on Espacenet goto-link

Abstract  Abstract

The invention claims to improve the precision of propagation path estimation in a case of receiving signals via a plurality of antennas. A transmitting device at a base station end comprises a preamble A generating part (010); a preamble B generating part (011); phase rotating parts (012013); multiplex parts (014015); an error correction encoding parts (016); an S/P converting part (017); a mapping part (018); a switch (019); IDFT parts (020026) which may be substituted by IFFT parts; P/S converting parts (021027); GI (Guard Interval) inserting parts (022028); D/A converting parts (023029); radio transmitting parts (024030); and antenna parts (025031). The preamble A generating part (010) and preamble B generating part (011) generate preambles A and B respectively (See a packet format in Fig. 1). The preamble A is outputted to the multiplex parts (014015) while the preamble B is outputted to the phase rotating parts (012013). The phase rotating parts (012013) then apply a continuous phase rotation to each of the sub-carriers of the preamble B. In a base station end transmitting device according to the present embodiment not the phase rotating part (012) but only the phase rotating part (013) applies a phase rotation to the preamble B.

To improve the precision of propagation path estimation in a case of receiving signals via a plurality of antennas. A transmitting apparatus at a base station end comprises a preamble A generating part (010); a preamble B generating part (011); phase rotating parts (012013); multiplex parts (014015); an error correction encoding parts (016); an S/P converting part (017); a mapping part (018); a switch (019); IDFT parts (020026) which may be substituted by IFFT parts; P/S converting parts (021027); GI (Guard Interval) inserting parts (022028); D/A converting parts (023029); radio transmitting parts (024030); and antenna parts (025031). The preamble A generating part (010) and preamble B generating part (011) generate preambles A and B respectively (See a packet format in Fig. 1). The preamble A is outputted to the multiplex parts (014015) while the preamble B is outputted to the phase rotating parts (012013). The phase rotating parts (012013) then apply a continuous phase rotation to each of the subcarriers of the preamble B. In a base station end transmitting apparatus according to the present embodiment not the phase rotating part (012) but only the phase rotating part (013) applies a phase rotation to the preamble B.

To improve the precision of propagation path estimation in a case of receiving signals via a plurality of antennas. A transmitting apparatus at a base station end comprises a preamble A generating part (010); a preamble B generating part (011); phase rotating parts (012013); multiplex parts (014015); an error correction encoding parts (016); an S/P converting part (017); a mapping part (018); a switch (019); IDFT parts (020026) which may be substituted by IFFT parts; P/S converting parts (021027); GI (Guard Interval) inserting parts (022028); D/A converting parts (023029); radio transmitting parts (024030); and antenna parts (025031). The preamble A generating part (010) and preamble B generating part (011) generate preambles A and B respectively (See a packet format in Fig. 1). The preamble A is outputted to the multiplex parts (014015) while the preamble B is outputted to the phase rotating parts (012013). The phase rotating parts (012013) then apply a continuous phase rotation to each of the subcarriers of the preamble B. In a base station end transmitting apparatus according to the present embodiment not the phase rotating part (012) but only the phase rotating part (013) applies a phase rotation to the preamble B.

Note:

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The information in grey was provided by the patent holder

The information in purple was extracted from the FrandAvenue

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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.

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