Utilizing space frequency COFDM on multipath fading channels

Fred C. Kellerman

doi:10.1117/12.720852

3 May 2007 Utilizing space frequency COFDM on multipath fading channels

Fred C. Kellerman

Proceedings Volume 6577, Wireless Sensing and Processing II; 65770D (2007) https://doi.org/10.1117/12.720852
Event: Defense and Security Symposium, 2007, Orlando, Florida, United States

Abstract

This paper will investigate the use of an enhanced rate one Alamouti Space Frequency (SF) multiple antenna Orthogonal Frequency Division Multiplex (OFDM) radio communication system. A two transmit, single receive antenna system will be simulated to operate under conditions of multipath fading with noise. A simple modification to the standard coherent Alamouti receive combiner will be applied and shown to improve bit error rate (BER) performance on rapidly fading multipath HF channels. Orthogonal Frequency Division Multiplexing frequency domain techniques will be utilized to effectively eliminate the Inter-Symbol Interference (ISI) resulting from the effects of multipath. Numerically simulated results will be shown for several multipath fading High Frequency (HF) radio channels. Inner convolutional error correction coding will be applied in addition to the Alamouti coding and numerically simulated BER results presented. Various HF channel conditions will be simulated including the 2 ms, 10 Hz, 2 ms, 5 Hz, CCIR poor (2 ms, 1 Hz) and extra poor (2 ms, 2 Hz) channel conditions. Performance under conditions of correlated transmit antennas will also be investigated.

Citation Download Citation

Fred C. Kellerman "Utilizing space frequency COFDM on multipath fading channels", Proc. SPIE 6577, Wireless Sensing and Processing II, 65770D (3 May 2007); https://doi.org/10.1117/12.720852

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