Title :
Layered space-frequency bit-interleaved coded modulation for MIMO systems
Author :
McKay, Matthew R. ; Collings, Lain B.
Author_Institution :
Sch. of Electr. & Info. Eng., Sydney Univ., NSW
Abstract :
We consider a layered space-frequency (LSF) extension to bit-interleaved coded modulation (BICM) for MIMO-OFDM systems. We derive tight analytical bounds for the coded BER when using zero-forcing (ZF) detectors. The analysis does not rely on standard BICM expurgation techniques, and provides exact expressions for the codeword pairwise error probability at high SNR. We show that the LSF extension achieves the same diversity order as non-layered systems, while also achieving significant cant SNR gains when the number of transmit antennas is large. We quantify the SNR gain and show that it is a function of the antenna configuration only, and is independent of the modulation and coding parameters. We also present simulation results for MIMO extensions to IEEE 802.11a OFDM WLANs
Keywords :
MIMO systems; OFDM modulation; antenna arrays; broadband networks; error statistics; interleaved codes; modulation coding; transmitting antennas; wireless LAN; BICM; IEEE 802.11a WLAN; LSF; MIMO-OFDM system; bit error rate; bit-interleaved coded modulation; coded BER; codeword pairwise error probability; layered space-frequency extension; multiple input multiple output; nonlayered system; orthogonal frequency division multiplexing; transmitting antenna; wireless local area network; zero-forcing detector; Bit error rate; Convolutional codes; Detectors; Interleaved codes; MIMO; Maximum likelihood detection; Modulation coding; OFDM modulation; Pairwise error probability; Transmitting antennas; BICM; MIMO; OFDM;
Conference_Titel :
Personal, Indoor and Mobile Radio Communications, 2005. PIMRC 2005. IEEE 16th International Symposium on
Conference_Location :
Berlin
Print_ISBN :
9.7838007291e+012
DOI :
10.1109/PIMRC.2005.1651612
