Accurate Outage Approximation of MRC Receivers in Arbitrarily Fading Channels

We propose a simple and accurate approximation of the outage probability at the output of L-branch diversity combining receivers with arbitrarily fading channels. The method is based on the saddlepoint approximation, which only requires the knowledge of the moment generating functions of the signal-to-noise ratio at the output of each diversity branch. In many particular cases of practical interest, the outage approximation is obtained in closed-form expressions. Numerical results illustrate the accuracy of the proposed method for practical outage values in a variety of fading scenarios.

[1]  Mohamed-Slim Alouini,et al.  Outage performance of reactive cooperation in Nakagami-m fading channels , 2010, 2010 IEEE 11th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC).

[2]  D. B. D. Costa,et al.  Highly Accurate Closed-Form Approximations to the Sum of α-μVariates and Applications , 2008, IEEE Transactions on Wireless Communications.

[3]  Giuseppe Caire,et al.  Error probability analysis of bit-interleaved coded modulation , 2006, IEEE Transactions on Information Theory.

[4]  Norman C. Beaulieu,et al.  BER Analysis of BPSK Signals in Ricean-Faded Cochannel Interference , 2007, IEEE Transactions on Communications.

[5]  Giuseppe Caire,et al.  A Closed-Form Approximation for the Error Probability of BPSK Fading Channels , 2007, IEEE Transactions on Wireless Communications.

[6]  Jean Armstrong,et al.  Outage probability of cooperative relay networks in Nakagami-m fading channels , 2006, IEEE Communications Letters.

[7]  Ali Abdi,et al.  Sum of gamma variates and performance of wireless communication systems over Nakagami-fading channels , 2001, IEEE Trans. Veh. Technol..

[8]  Matthew R. McKay,et al.  A Throughput-Based Adaptive MIMO-BICM Approach for Spatially-Correlated Channels , 2006, 2006 IEEE International Conference on Communications.

[9]  Ronald W. Butler.  Saddlepoint Approximations with Applications: Probability computation with p * , 2007 .

[10]  C. Helstrom.  Performance of receivers with linear detectors , 1990 .

[11]  Lutz H.-J. Lampe,et al.  An analytical approach for performance evaluation of BICM transmission over Nakagami-m fading channels , 2010, IEEE Transactions on Communications.

[12]  Tuan A. Tran,et al.  Sum of arbitrarily correlated Gamma variates and performance of wireless communication systems over Nakagami-m fading channels , 2007, IET Commun..

[13]  Mohamed-Slim Alouini,et al.  Outage probability of diversity systems over generalized fading channels , 2000, IEEE Trans. Commun..

[14]  Hyundong Shin,et al.  Saddlepoint approximation to the outage capacity of MIMO channels , 2006, IEEE Transactions on Wireless Communications.

[15]  Nikos C. Sagias,et al.  Outage Analysis of Decode-and-Forward Relaying Over Nakagami- $m$ Fading Channels , 2008, IEEE Signal Processing Letters.

[16]  S. Rice,et al.  Saddle point approximation for the distribution of the sum of independent random variables , 1980, Advances in Applied Probability.