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In this paper a soft output detector for a MIMO-CDMA system with data-dependent spreading waveforms is proposed. In such systems, the spreading waveforms used by transmit antennas are dependent on the transmitting data. The proposed soft output detector calculates the reliability of each detected bits in terms of LLRs, hence an outer convolutional encoder with soft input Viterbi decoder is used to...
This paper analyzes the performance and complexity of four heuristic approaches applied to a synchronous multicarrier multiuser detection (MuD) of single/multiple transmit antennas and multiple receive antennas code division multiple access (S/MIMO MC-CDMA) system. The genetic algorithm (GA), simulation annealing (SA) and Tabu search (TS) heuristic algorithms (HA) in a single-objective optimization...
Nowadays, the demand on communication system is towards high capacity and faster data transmission with minimum error or losses. In wireless communication, multiple input multiple output (MIMO) is one of the techniques that can increase spectral efficiency and link reliability. Therefore, the performance of MIMO-CDMA with comparison to conventional code division multiple access (CDMA) system has been...
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