Diversity transmitter and diversity transmission method

Details Diversity transmitter and diversity transmission method Diversity transmitter and diversity transmission method

2007-01-03

2009-11-24

Vo, Don N (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

Reexamination Certificate

active

07623590

ABSTRACT:
The present invention concerns a diversity transmitter, comprising: transmit symbol input means (1) for inputting a symbol matrix (b) to be forwarded to a transmit processing means (2), said transmit processing means comprising supplying means (2a) for supplying columns of said symbol to a plurality of at least two branches, each branch being supplied to a respective one of spatial channels (A1, . . . , Am) for transmission to a receiver, a parallelization means (2b) adapted to provide within each branch at least two parallel channels allocated to a respective user, and weighting means (2c) adapted to subject the symbol signals on at least one of said branches to an invertible linear transformation with a fixed complex weight, the complex weight being different for at least two parallel channels. The present invention also concerns a corresponding diversity transmission method.

REFERENCES:
patent: 6157612 (2000-12-01), Weerackody et al.
patent: 6594473 (2003-07-01), Dabak et al.
patent: 6661856 (2003-12-01), Calderbank et al.
patent: 2003/0227979 (2003-12-01), Tirkkonen
patent: 2005/0063483 (2005-03-01), Wang et al.
patent: 1063790 (2000-12-01), None
patent: 01056218 (2001-08-01), None
3rd Generation Partnership Project, “Technical Specification Group Radio Access Network; Physical layer procedures (FDD) (Release 4),” 3GPP 25.214 v4.0.0 (2000).
3GPP2 C.P9010 version 0.21, “Draft Baseline Text for the Physical Layer Portion of the 1xEV Specification,” 3GPP2 TSG-C Working Group III, Qualcomm Incorporated (Aug. 24, 2000).
Hottinen et al., “A Randomization Technique for Non-Orthogonal Space-Time Block Codes,” IEEE, Finland (2001).
Hottinen et al., “A Space-Time Coding concept for a Multi-Element Transmitter,” Nokia Research Center, Finland.
New CPICH Transmission scheme for 4-antenna transmit diversity, TSG-RAN Working Group 1 meeting #15, TSGR1#15(00)1072, Samsung Electronics Co., Ltd., Germany (Aug. 2000).
Sayeed, Z. et al., “Transmit Diversity for Coded OFDM Systems in Single Frequency Networks,” Global Telecommunications Conference - Globecom '99.
Kaiser, S.: “Spatial Transmit Diversity Techniques for Broadband OFDM Systems,” Institute of Communications and Navigation, Germany.
Tirkkonen et al, “Complex Space-Time Block Codes for Four Tx Antennas,” Nokia Research Center, Finland.
International Search Report - PCT/EP01/009231, International Search Authority - European Patent Office, Jun. 5, 2002.

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