In this paper we propose an improved multiple-input multiple-output (MIMO) polynomial cancellation coding (PCC) orthogonal frequency division multiplexing (OFDM) system. In this improved system, PCC OFDM symbols are transmitted from different antennae with different time offsets. At the receiver these symbols are demodulated using each of those time offsets. Time offsets substantially reduce the power of the interfering signal relative to the wanted signal at the PCC OFDM demodulation stage. The improved system has significantly reduced sensitivity to imperfect channel state information (CSI) and also retains the insensitivity of normal PCC OFDM to frequency offsets. Results are presented for the improved system with (2, 2) MIMO in flat Rayleigh fading channels. It shows that the improved system has a lower bit error rate (BER).
|Title of host publication||2010 IEEE Wireless Communications and Networking Conference, WCNC 2010 - Proceedings|
|Publication status||Published - 2010|
|Event||IEEE Wireless Communications and Networking Conference 2010 - Sydney Convention and Exhibition Centre, Sydney, Australia|
Duration: 18 Apr 2010 → 21 Apr 2010
|Conference||IEEE Wireless Communications and Networking Conference 2010|
|Abbreviated title||WCNC 2010|
|Period||18/04/10 → 21/04/10|