Lattice decoding for joint detection in direct-sequence CDMA systems
نویسندگان
چکیده
A new joint detection method based on sphere packing lattice decoding is presented in this paper. The algorithm is suitable for both synchronous and asynchronous multiple access direct-sequence code-division multiple-access (DS-CDMA) systems, and it may jointly detect up to 64 users with a reasonable complexity. The detection complexity is independent of the modulation size and large -PAM or -QAM constellations can be used. Furthermore, a theoretical gain analysis is performed in which the multiple-access system performance is derived from the lattice parameters.
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عنوان ژورنال:
- IEEE Trans. Information Theory
دوره 49 شماره
صفحات -
تاریخ انتشار 2003