| Publisher | Institute of Electrical and Electronics Engineers | ||
|---|---|---|---|
| Format | 372.0KB PDF, requires Acrobat Rdr 5 | Date added | 01 Jun 2001 |
| Topics | Wireless LAN, Modems, Mobile - Wireless Communications | ||
| Downloads | 15 | ||
Mitigation of multipath fading effects and suppression of multiuser interference (MUI) constitute major challenges in the design of wide-band third-generation wireless mobile systems. Space-time (ST) coding offers an effective transmit-antenna diversity technique to combat fading, but most existing ST coding schemes assume flat fading channels that may not be valid for wide-band communications. Single-user ST coded orthogonal frequency-division multiplexing transmissions over frequency-selective channels suffer from finite-impulse response channel nulls (fades). Especially multiuser ST block-coded transmissions through (perhaps unknown) multipath present unique challenges in suppressing not only MUI but also intersymbol/chip interference.
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