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Title: Blind detection with unique identification in two-way relay channel
Authors: Li, L.
Ding, Y.
Zhang, J.-K.
Zhang, R. 
Keywords: blind detection
generalized likelihood ratio test
least square error
Two-way relay
unique identification
Issue Date: 2012
Citation: Li, L., Ding, Y., Zhang, J.-K., Zhang, R. (2012). Blind detection with unique identification in two-way relay channel. IEEE Transactions on Wireless Communications 11 (7) : 2640-2648. ScholarBank@NUS Repository.
Abstract: This paper considers the blind detection for a two-way relay system in which two source nodes exchange information via a relay node by amplify-and-forward relaying. An efficient transmission scheme is first proposed to achieve unique identifications of both the transmitted symbols and channel coefficients at a noise-free receiver using the M-ary phase shift keying modulation. Blind receivers based on the generalized likelihood ratio test are then derived for both the reciprocal and nonreciprocal channels with additive Gaussian noise. The least square error-based receiver is also studied for the case without prior knowledge of the noise power for detection. Moreover, constellation selection algorithms are proposed to achieve a uniform transmission bit rate for the ease of implementation. Finally, numerical results are provided to validate the proposed schemes. © 2012 IEEE.
Source Title: IEEE Transactions on Wireless Communications
ISSN: 15361276
DOI: 10.1109/TWC.2012.060212111755
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