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A NEW PRECODING APPROACH FOR MIMO WIMAX BASED MULTIWAVELET OFDM IN TRANSMIT-ANTENNA AND PATH-CORRELATED CHANNELS | ||
| AL-TAQANI | ||
| Article 1, Volume 27, Issue 1, 2014, Pages 0-0 | ||
| Author | ||
| Mohammed Aboud Kadhim | ||
| Abstract | ||
| This paper investigates a new precoding approach in transmit-antenna and path-correlated channels to the adaptation for the Worldwide Interoperability for Microwave Access (WiMAX) baseband, in the physical layer performance of multi-antenna techniques, All cases are based on the IEEE 802.16d standard using orthogonal frequency division multiplexing (OFDM) based discrete multiwavelet transform (DMWT) and quadrature phase shift keying (QPSK) ¾ of coding rates. The proposed Tomlinson-Harashima Precoding (THP) in WiMAX baseband consider a new way and only requires the statistical knowledge of the channel at the transmitter, which significantly reduces the feedback requirements. Both linear and non-linear precoders amend the system bit error rate in transmit-antenna and path-correlated channels. The proposed non-linear precoder THP in closed loop design achieved much lower bit error rates, increased signal-to-noise power ratio (SNR) than linear precoder. | ||
| Keywords | ||
| WIMAX; THP; OFDM; FFT; MIMO; OSTBC; DMWT | ||
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