Abstract
The issue of antenna correlation in multi-pair massive antenna relay network is studied. Under the spatial correlation properties of the channel, an analytical approximation for both upper and lower bounds using popular maximum ratio combining/maximum ratio transmission relaying scheme is developed. This gives an insight of the system achievable rate by exploiting channel reciprocity in the time-division duplex protocol. To this aim five special antenna correlation cases are discussed and the corresponding overall spectral efficiency is analyzed. The performance of the scheme is compared against the other precoding and receiver combining schemes, i.e., zero forcing and minimum-mean-squared-error processing under the antenna correlation model. The analytical results backed up by simulations clearly quantify the impacts of antenna correlation under various cases on user spectral efficiency.
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