Ahmed Gh. Wadday; Saod A. Alseyab; Abdulkareem S. bdullah
Abstract
A new algorithm for a group iterative linear Zero-Forcing (ZF) receiver formultiple-input multiple-output (MIMO) systems is proposed in this paper. Theproposed algorithm merges between ...
Read More ...
A new algorithm for a group iterative linear Zero-Forcing (ZF) receiver formultiple-input multiple-output (MIMO) systems is proposed in this paper. Theproposed algorithm merges between the group linear ZF receiver and V-Blastalgorithms, where the signals in every group are detected by linear ZF method andthen successive interference cancellation detection is applied between the differentgroups. Three types of modulation schemes are adopted for testing this algorithmnamely; BPSK, QPSK, and 16 QAM. Simulation results show that the proposedalgorithm achieves a performance improvement over the ZF algorithm and thegrouped linear ZF algorithm at modulations (BPSK, QPSK). The proposed schemeoffers better performance gain for BPSK modulation of about 7dB and 2dB comparedwith ZF and MMSE schemes respectively at BER of 10-3. On the other hand, theproposed scheme offer better performance gain of about 3dB and 1dB compared withZF and minimum mean square error schemes for QPSK modulation at BER 10-3.However, at using modulation of (16QAM), the performance of the proposedalgorithm is almost the same as that of the aforementioned algorithms. A littleincrease of computational complexity is noticed with this proposed algorithmcompared with both the ZF, MMSE and the grouped linear ZF algorithms.
