Cyclic delay diversity and space coded-hybrid diversity...

Details Cyclic delay diversity and space coded-hybrid diversity... Cyclic delay diversity and space coded-hybrid diversity...

2006-02-27

2009-10-27

Pham, Chi H (Department: 2416)

Multiplex communications

Generalized orthogonal or special mathematical techniques

Particular set of orthogonal functions

C370S229000

Reexamination Certificate

active

07609613

ABSTRACT:
A diversity transmitter for use in an OFDM transmission protocol which diversity transmitter comprises:a diversity generator (2) for receiving and diversifying OFDM transmit symbols, and outputting diversified OFDM symbol matrices (DOSM), DOSM symbols within each DOSM being divided into at least two primary streams each comprising different DOSM symbols,a transmit processor for receiving said at least two primary streams of DOSM symbols, and for transforming said each DOSM symbol from the frequency domain into the time domain, and outputting time domain OFDM symbols (TDOSs),a cyclic delay circuit (41 . . . 4P) for dividing at least one of said primary streams of TDOSs into at least two branches of identical TDOSs, each branch for supplying a respective spatial channel for transmission to a receiver,the arrangement being such that, in use, said cyclic delay circuit (41 . . . 4P) applies a cyclic time shift to a TDOS symbol in at least one of said branches before transmission.

REFERENCES:
patent: 6842487 (2005-01-01), Larsson
patent: 2006/0068698 (2006-03-01), Sandhu et al.
patent: 2 392 584 (2004-03-01), None
Bölcskei, Helmut, et al., “Space-Frequency Coded Broadband OFDM Systems,” IEEE WCNC 2000, Chicago IL, Sep. 23-28, 2000, pp. 1-6.
Alamouti, Siavash M., “A Simple Transmit Diversity Technique for Wireless Communications,” IEEE Journal on Select Areas in Communications, vol. 16, No. 8, Oct. 1998, pp. 1451-1458.
Tarokh, Vahid, et al., “Space—Time Block Codes from Orthogonal Designs,” IEEE Transactions on Information Theory, vol. 45, No. 5, Jul. 1999, pp. 1456-1467.
Tarokh, Vahid, et al., “Space—Time Codes for High Data Rate Wireless Communication: Performance Criterion and Code Construction,” IEEE Transactions on Information Theory, vol. 44, No. 2, Mar. 1998, pp. 744-765.
Dammann, Armin, et al., “Standard Conformable Antenna Diversity Techniques for OFDM and its Application to the DVB-T System,” IEEE Global Telecommunications Conference (GLOBECOM 2001), Nov. 2001, pp. 3100-3105.
Bölcskei, Helmut, et al., “Space—Frequency Coded MIMO-OFDM with Variable Multiplexing— Diversity Tradeoff,” International Conference on Commun. (ICC), May 2003, pp. 2837-2841.
Xin, Yan, et al., “Space—Time Diversity Systems Based on Linear Constellation Precoding,” IEEE Transactions on Wireless Communications, vol. 2, No. 2, Mar. 2003, pp. 294-309.
Ma, Xiaoli, et al., “Space—Time—Multipath Coding Using Digital Phase Sweeping or Circular Delay Diversity,” IEEE Transactions on Signal Processing, 2004, pp. 1-10.
Su, Weifeng, et al., “Obtaining Full—Diversity Space—Frequency Codes from Space—Time Codes via Mapping,” IEEE Transactions on Signal Processing, vol. 51, No. 11, Nov. 2003, pp. 2905-2916.
European Telecommunications Standards Institute (ETSI) TS 101 475 V1.1.1 Technical Specification, Broadband Radio Access Networks (BRAN); HIPERLAN Type 2; Physical (PHY) layer, Apr. 2000, pp. 1-40.
Jakes, W. C., et al., “Microwave Communications,” Wiley, 1974, pp. 64-75.

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