Abstract
We present a novel technique for the detection of spatially multiplexed transmitted symbols in uncoded multiple-input multiple-output orthogonal frequency division multiplexing (MIMO-OFDM) system. The method, termed Selective Detection, observes errors caused by a simple zero-forcing (ZF) on different OFDM sub-carriers, and selectively performs list sphere detection (LSD) on sub-carriers with larger errors. Compared with the full-complexity LSD, the proposed algorithms could significantly reduce the receiver complexity at a small signal-to-noise ratio (SNR) loss. For example, simulation results for a MIMO-OFDM system using four transmitters and four receivers with 16 quadrature amplitude modulation (16-QAM) show that 93% of SNR gain that can be achieved by the use of LSD over ZF can be realised if only 33% of sub-carriers are intelligently selected for LSD.
Original language | English |
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Title of host publication | The 2nd International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2007 |
Place of Publication | Piscataway, NJ |
Publisher | Institute of Electrical and Electronics Engineers (IEEE) |
Pages | 1-5 |
Number of pages | 5 |
ISBN (Print) | 0769528422, 9780769528427 |
DOIs | |
Publication status | Published - 2007 |
Externally published | Yes |
Event | 2nd International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2007 - Sydney, Australia Duration: 27 Aug 2007 → 30 Aug 2007 |
Other
Other | 2nd International Conference on Wireless Broadband and Ultra Wideband Communications, AusWireless 2007 |
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Country/Territory | Australia |
City | Sydney |
Period | 27/08/07 → 30/08/07 |