الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
Single carrier-frequency division multiple access (SC-FDMA) system has similar performance as orthogonal frequency division multiple access (OFDMA) system, but with lower peak to average power ratio (PAPR). Thus it became the uplink transmission of Long-Term Evolution (LTE). Single carrier code frequency division multiple access (SC-CFDMA) system is the combination of SC-FDMA and code division multiple access (CDMA) and reaps the benefits of both techniques. The multiple input multiple output )MIMO( SC-FDMA systems have been already implemented in LTE. In this dissertation, four proposed techniques are presented for performance enhancement of the MIMO SC-FDMA systems. First, a novel code spatial multiplexing MIMO single carrier frequency division multiple access (CSM MIMO SC-FDMA) transceiver is presented. The proposed CSM SC-FDMA technique allocates a unique spreading code within each transmit antenna branch. The proposed CSM SC-FDMA system improves the bit error rate (BER) performance and the channel capacity over both uncorrelated and correlated Rayleigh fading MIMO channels. The simulation results show that the proposed CSM SC-FDMA system has the ability to cancel the effects of correlation between antennas in fading MIMO channels and carrier frequency offsets (CFOs). Simulation results also show that the proposed technique has a significant improvement in the BER performance over the traditional SM SC-FDMA system in both uncorrelated and correlated Rayleigh fading channels. Moreover, the proposed CSM SC-FDMA system has superior channel capacity performance over the traditional SM SC-FDMA system especially under correlated Rayleigh fading channels. As well, bit error rate (BER) analysis of the proposed CSM SC-FDMA and traditional SM SC-FDMA system over a frequency-selective Rayleigh fading channel is presented for the case of zero-forcing (ZF) equalizer and QPSK modulation. Second, a novel space frequency block codes MIMO single carrier code frequency division multiple access (SFBC MIMO SC-CFDMA) transceiver is proposed. The proposed SFBC SC-CFDMA system allocates a unique spreading code for each user. The proposed SFBC SC-CFDMA system improves both of the PAPR performance and BER performance. The simulation results show that, the proposed SFBC SC-CFDMA system has the ability to cancel the effect of CFOs. The simulation results also show that, the proposed SFBC SC-CFDMA system has a superior improvement in the BER performance over the traditional SFBC SC-FDMA system. Furthermore, the PAPR performance of the proposed SFBC SC-CFDMA system is better than that of the traditional system in the case of localized mapping. As well, BER analysis of the proposed SFBC SC-CFDMA and traditional SFBC SC-FDMA system over a frequency-selective Rayleigh fading channel is presented for the case of ZF equalizer and QPSK modulation. Third, the dissertation presents a novel space-wavelet block codes MIMO single carrier wavelet-division multiple access (SWBC MIMO SC-WDMA) transceiver. The proposed SWBC SC-WDMA transceiver system improves both of the BER performance and PAPR performance. BER analysis of the proposed SWBC SC-WDMA system over a frequency-selective Rayleigh fading channel is presented for the case of ZF equalizer and QPSK modulation. The simulation results show that the proposed SWBC SC-WDMA system has a lower PAPR than that of the conventional system by about 10.4 dB at PAPR=10−4 for localized mapping scheme. The simulation results also show that the proposed SWBC SC-WDMA system has superior improvements in BER performance. Finally, the dissertation introduces a novel CSM MIMO SC-WDMA transceiver based on the discrete wavelet packet transform (DWPT). The proposed CSM SC-WDMA transceiver improves both of the BER performance and PAPR performance. The simulation results show that the PAPR of the proposed CSM SC-WDMA is better than the proposed CSM SC-FDMA system by 8 dB at PAPR=10−4 in the case of QPSK modulation. The simulation results also show that the proposed CSM SC-WDMA system has the ability to cancel the effects of correlation in MIMO fading channels and to reduce the computational complexity in the transmitter side. The simulation results show that the proposed CSM SC-WDMA system achieves better BER performance than proposed CSM SC-FDMA by about 13 dB over the correlated channels at a BER=10−4 . It is also observed that the BER performance of the proposed CSM SC-WDMA system is better than SM SC-FDMA system by about 23 dB over the correlated channels at a BER=10−4. Moreover, BER analysis of the proposed CSM SC-WDMA system over a frequency-selective Rayleigh fading channel is presented for the case of ZF equalizer and QPSK modulation.