Title :
Adaptive rate MIMO system using space-time block mapping
Author :
Hwang, Kyu Jong ; Lee, Sok-Kyu ; Chang, KyungHi
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon, South Korea
Abstract :
The MIMO system employing multiple antennas at both the transmitter and the receiver increases the spectral efficiency greatly. But the spectral efficiency of MIMO system depends on spatial channel characteristics. So some kind of adaptive transmission is required according to spatial channel conditions. In this paper, we propose adaptive rate MIMO system using space-time block mapping. The rate is controlled by effective number of spatial channels. The effective number of spatial channels is determined from spatial channel characteristics and is integer number from 1 to the minimum number of transmit and receive antennas. By switching the MIMO mode adaptively according to spatial channel conditions, throughput can be maximized.
Keywords :
MIMO systems; OFDM modulation; adaptive systems; antenna arrays; block codes; diversity reception; receiving antennas; space-time codes; telecommunication channels; transmitting antennas; adaptive rate MIMO system; multiple antennas; receiver; space-time block mapping; spatial channel conditions; spectral efficiency; transmitter; Adaptive systems; Communication switching; MIMO; OFDM; Peak to average power ratio; Receiving antennas; Space technology; Throughput; Transmitters; Transmitting antennas;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207649
