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Title: Constructing quasi-optimum gmw and m-sequence subfamilies with minimized system bit error rate
Authors: Chen, X.H. 
Lang, T.
Oksman, J.
Keywords: Biterror rate
Orthogonal code
Spread spectrum
Issue Date: 1996
Citation: Chen, X.H.,Lang, T.,Oksman, J. (1996). Constructing quasi-optimum gmw and m-sequence subfamilies with minimized system bit error rate. IEICE Transactions on Communications E79-B (7) : 963-973. ScholarBank@NUS Repository.
Abstract: Either GMW sequence or m-sequence possesses a 2-vaIued auto-correlation function which helps to improve the performance of a RAKE receiver. However, their cross-correlation functions are less well controlled. Before they can be applied to a CDMA system, it is necessary to construct their sub-families (taking advantage of their large family size) which offer satisfactory cross-correlation functions. This paper studies several algorithms for constructing those quasi-optimum sub-families in terms of minimized bit error rate under cochannel interference. The study shows that the performance of resultant sub-families is sensitive to sub-family sizes and algorithms. A new criterion based on combined (even and odd) maximum cross-correlation for code selection is introduced, and highest-peak-deleting and most-peak-deleting algorithms are suggested for constructing quasi-optimum sub-families of GMW and m-sequences.
Source Title: IEICE Transactions on Communications
ISSN: 09168516
Appears in Collections:Staff Publications

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