Radio transmission apparatus, radio reception apparatus and...

Details Radio transmission apparatus, radio reception apparatus and... Radio transmission apparatus, radio reception apparatus and...

2004-09-29

2009-06-09

Tran, Khanh C (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

Reexamination Certificate

active

07545873

ABSTRACT:
A radio transmission apparatus capable of enhancing the diversity effect. In this apparatus, phase rotation section (102) performs phase rotation processing of 40.6°=26.6°+14.0°, interleavers (106,111) perform two-time interleaving processing before IQ combining processing performed in a combining section (107) and after IQ separation processing performed in an IQ separating section (108), and the original modulation symbol obtained in a mapping section (101) is thereby dispersed and mapped to/at signal points of M-ary modulation level higher two ranks or more (for example, from a QPSK symbol to 256QAM symbols).

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PCT International Search Report dated Dec. 14, 2004.
“Modulation diversity for OFDM,” 3GPP, TSG RAN Working Group 1 Meeting #31 R1-030156, Feb. 21, 2003.
J. Boutros, et al., “Signal Space Diversity: A Power-and Bandwidth-Efficient Diversity Technique for the Rayleigh Fading Channel,” IEEE Transactions on Information Theory, vol. 44, No. 4, pp. 1453-1464, Jul. 1998.

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