Title :
Adaptive spatial modulation for MIMO-OFDM
Author :
Chae, Chan-Byoung ; Katz, Marcos ; Suh, Changho ; Jeong, Hongsil
Author_Institution :
Telecommun. R&D Center, Samsung Electron., Suwon, South Korea
Abstract :
In this paper we propose and analyze an adaptive spatial modulation scheme for MIMO-OFDM systems which adaptively and optimally selects one of the following transmission modes: diversity, spatial multiplexing and a hybrid combination of these two modes. Two criterias are used for mode selection, namely, the minimum Euclidean distance and a simple threshold based stochastic method exploiting channel quality estimations. We consider practically implementable antenna configuration with four transmit antennas and two or four receive antennas. Simulation results show that considerable BER performance gains can be obtained by the adaptive spatial modulation system, as compared with systems based on fixed modulation schemes.
Keywords :
MIMO systems; OFDM modulation; adaptive antenna arrays; adaptive modulation; channel estimation; diversity reception; error statistics; fading channels; multipath channels; multiplexing; radio networks; receiving antennas; stochastic processes; transmitting antennas; BER performance; Euclidean distance; MIMO-OFDM systems; adaptive spatial modulation scheme; bit error rate; channel quality estimations; communication switching; diversity reception; mixed mode approach; multipath fading channels; receive antennas; spatial multiplexing; stochastic method; transmit antennas; Diversity methods; Diversity reception; Euclidean distance; Fading; Feedback; MIMO; OFDM modulation; Receiving antennas; Statistics; Transmitting antennas;
Conference_Titel :
Wireless Communications and Networking Conference, 2004. WCNC. 2004 IEEE
Print_ISBN :
0-7803-8344-3
DOI :
10.1109/WCNC.2004.1311523
