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• W2079808525 abstract "Cooperative communication systems can effectively be used to combat fading. A cooperative protocol that can be used with half-duplex terminals is the quantize and forward (QF) protocol, in which the relay quantizes the information received from the source before forwarding it to the destination. Most studies on the QF protocol are carried out under the assumption of perfect channel state information (CSI) at the destination, which is not often the case in real-life systems. Therefore, in the present contribution, the effect of incomplete CSI is analyzed for flat Rayleigh fading channels with a frequency offset. To limit the complexity of the estimation, the destination terminal assumes that the relay operates in an amplify and forward (AF) mode. By using the expectation maximization (EM) algorithm to refine the initial pilot-based estimates, the resulting error performance can be made very close to that of a system with perfect CSI." @default.
• W2079808525 created "2016-06-24" @default.
• W2079808525 creator A5024813191 @default.
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• W2079808525 date "2012-09-01" @default.
• W2079808525 modified "2023-10-05" @default.
• W2079808525 title "Quantize and forward cooperative communication: Joint channel and frequency offset estimation" @default.
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• W2079808525 doi "https://doi.org/10.1109/pimrc.2012.6362902" @default.
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