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Differential Amplify-and-Forward Relaying Using Linear Combining in Time-Varying Channels (1512.01516v1)
Published 4 Dec 2015 in cs.IT and math.IT
Abstract: Differential encoding and decoding can be employed to circumvent channel estimation in wireless relay networks. This article studies differential amplify-and-forward relaying using linear combining with arbitrary fixed combining weights in time-varying channels. An exact bit error rate (BER) analysis is obtained for this system using DBPSK modulation and over time-varying Rayleigh fading channels. The analysis is verified with simulation results for several sets of combining weights and in various fading scenarios.