Title :
Performance of space-frequency coded broadband OFDM under real-world propagation conditions
Author :
Bolcskei, Helmut ; Borgmann, Moritz ; Paulraj, Arogyaswami J.
Author_Institution :
Commun. Technol. Lab., ETH Zurich, Zurich, Switzerland
Abstract :
In this paper, using a spatial broadband channel model taking into account transmit and receive antenna correlation, we study the influence of propagation conditions on the performance of space-frequency coded OFDM. For a given space-frequency code, we quantify the achievable diversity order and coding gain as a function of the transmit and receive correlation matrices. We find that the presence of transmit correlation results in widely varying performance losses. High-rate space-frequency codes such as spatial multiplexing are typically significantly more affected by transmit correlation than low-rate codes such as space-frequency block codes.
Keywords :
OFDM modulation; diversity reception; encoding; radiowave propagation; receiving antennas; transmitting antennas; wireless channels; broadband OFDM; coding gain; diversity order; real world propagation; space-frequency code; spatial broadband channel model; spatial multiplexing; transmit antenna-receive antenna correlation; transmit correlation; Broadband communication; Correlation; Fading; OFDM; Propagation losses; Receivers; Wireless communication;
Conference_Titel :
Signal Processing Conference, 2002 11th European
Conference_Location :
Toulouse
