Title :
High-rate layered space-time transmissions based on constellation-rotation
Author :
Xin, Yan ; Liu, Zhiqiang ; Giannakis, Georgias B.
Author_Institution :
Dept. of ECE, Minnesota Univ., Minneapolis, MN, USA
Abstract :
Recent theoretical and experimental studies have shown that with affordable complexity, layered space-time (LST) transmissions can attain very high spectral efficiency in a rich-scattering environment. In this paper, we propose a novel high rate linearly precoded LST system, which allows for any number of transmit and receive antennas, and offers flexibility in trading performance with bandwidth efficiency and decoding complexity. Even with sub-optimum decoding, the system enjoys considerable transmit diversity gains. Its superior performance over existing uncoded V-BLAST and linear dispersion (LD) codes is confirmed by simulations.
Keywords :
channel coding; data communication; decoding; diversity reception; electromagnetic wave scattering; receiving antennas; spectral analysis; transmitting antennas; bandwidth efficiency; constellation rotation; decoding complexity; high-rate transmissions; layered space-time transmissions; linearly precoded LST system; performance; receive antennas; rich-scattering environment; spectral efficiency; sub-optimum decoding; transmit antennas; transmit diversity; Bandwidth; Bit error rate; Block codes; Convolutional codes; Decoding; Diversity methods; Performance gain; Receiving antennas; Transmitters; Transmitting antennas;
Conference_Titel :
Wireless Communications and Networking Conference, 2002. WCNC2002. 2002 IEEE
Print_ISBN :
0-7803-7376-6
DOI :
10.1109/WCNC.2002.993541
