Abstract
This paper studies a novel cooperative transmission scheme that allows single-antenna users to benefit from spatial diversity for the uplink of TDD-CDMA systems. In such systems, the chip-synchronous transmission is attainable and thus, using orthogonal spreading codes can completely eliminate MAI in flat Rayleigh fading channels plus AWGN and make the user-cooperation possible. The proposed cooperation scheme is applicable to any constant-envelope modulation and achieves the fullest diversity order, the low implementation complexity and the full data rate. The closed-form outage probability expression was also derived to verify its validity. A variety of numerical results reveal the cooperation significantly outperforms non-cooperative counterpart under the same transmit power constraint.
This research was supported by the MIC (Ministry of Information and Communication), Korea, under the ITRC (Information technology Research Center) support program supervised by the IITA (Institute of Information Technology Assessment).
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Van Khuong, H., Kong, HY. (2005). Proposal of Cooperative Transmission for the Uplink of TDD-CDMA Systems. In: Ho, YS., Kim, HJ. (eds) Advances in Multimedia Information Processing - PCM 2005. PCM 2005. Lecture Notes in Computer Science, vol 3768. Springer, Berlin, Heidelberg. https://doi.org/10.1007/11582267_17
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DOI: https://doi.org/10.1007/11582267_17
Publisher Name: Springer, Berlin, Heidelberg
Print ISBN: 978-3-540-30040-3
Online ISBN: 978-3-540-32131-6
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