MIMO Rayleigh-product channels with co-channel interference
IEEE Transactions on Communications
IEEE Transactions on Signal Processing
Improved linear group detection for combined spatial multiplexing/STBC systems
IEEE Transactions on Communications
Error probability and SINR analysis of optimum combining in Rician fading
IEEE Transactions on Communications
IEEE Transactions on Information Theory
Bypassing orthogonal relaying transmissions via spatial signal separation
IEEE Transactions on Communications
EURASIP Journal on Advances in Signal Processing - Special issue on cooperative MIMO multicell networks
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We derive an exact bit-error probability (BEP) expression for coherent detection of binary signals with optimum combining in wireless systems in the presence of multiple cochannel interferers and thermal noise. A flat Rayleigh fading environment with space diversity, uncorrelated equal-power interferers, and additive white Gaussian noise is considered. The approach is to use the chain rule of conditional expectation together with the joint probability density function (pdf) of the eigenvalues of the interference correlation matrix. This joint pdf is related to the Vandermonde determinant. Let NA denote the number of antennas and NI the number of interferers. We consider both the cases of an overloaded system, in which NI≥NA, and an underloaded system, in which NIA. Using averaging techniques that make use of the properties of the Vandermonde determinant, we obtain in each of the two cases a closed-form BEP expression as a finite sum, and the only special function that this expression contains is the Gaussian Q-function. This makes it a powerful tool for analysis and computation.