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A Low-Complexity Algorithm for Improving Computing Power of Multiuser Receivers for Next Generation Wireless Systems


Syed S. Rizvi, Aasia Riasat, Khaled M. Elleithy


Vol. 9  No. 6  pp. 1-10


A new transformation matrix (TM) algorithm for reducing the computational complexity of multiuser receivers for DS-CDMA wireless system is presented. Next generation multiuser wireless receivers will need to use low computational complexity algorithm in order to perform both fast signal detection and error estimation. Several multiuser signal detection algorithms have proposed for next generation wireless receivers, which are designed to give good performance in terms of signal to noise ratio (SNR) and bit error rate (BER), are discarded for a direct implementation as they have high computational complexity. In this paper, we propose a new low-complexity TM algorithm that can be used to perform fast signal detection for multiuser wireless receives. This reduction in computational complexity would likely to give us a considerable improvement in the performance of multiuser wireless receivers such as high computing power and low error rate. In addition, we also present a formal mathematical proof for computational complexities that verifies the low-complexity of the proposed algorithm.


Computational complexity, DS-CDMA systems, Multiuser communications, Wireless receivers