Title :
Low-complexity, full-diversity space-time-frequency block codes for MIMO-OFDM
Author :
Rao, D. R V Jagannadha ; Shashidhar, V. ; Khan, Zafar A. ; Rajan, B.S.
Author_Institution :
Dept. of Electr. Commun. Eng., Indian Inst. of Sci., Bangalore, India
fDate :
29 Nov.-3 Dec. 2004
Abstract :
We present a new class of space-time-frequency block codes (STFBC) for multiantenna orthogonal frequency division multiplexing (MIMO-OFDM) transmissions over frequency selective Rayleigh fading channels. We show that these codes admit symbol-by-symbol decoding (decoupled decoding) when the number of nonzero taps of the channel impulse response is equal to two and they admit reduced complexity (1/2 of that of known schemes) for more than two channel taps. We also present simulation results to show that our codes perform better than the known codes.
Keywords :
MIMO systems; OFDM modulation; Rayleigh channels; block codes; diversity reception; space-time codes; MIMO-OFDM; STFBC; channel impulse response nonzero taps; decoupled decoding; frequency selective Rayleigh fading channels; full-diversity space-time-frequency block codes; low-complexity block codes; multiantenna orthogonal frequency division multiplexing; symbol-by-symbol decoding; Antenna arrays; Block codes; Decoding; Fading; Frequency diversity; Frequency domain analysis; OFDM; Receiving antennas; Space time codes; Transmitting antennas;
Conference_Titel :
Global Telecommunications Conference, 2004. GLOBECOM '04. IEEE
Print_ISBN :
0-7803-8794-5
DOI :
10.1109/GLOCOM.2004.1377940
