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Bit Error-Rate Minimizing Detector for Amplify-and-Forward Relaying Systems Using Generalized Gaussian Kernel

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3 Author(s)
Qasim Zeeshan Ahmed ; Physical Sciences and Engineering Division, King Abdullah University of Science and Technology (KAUST), Thuwal, Makkah Province, Saudi Arabia ; Mohamed-Slim Alouini ; Sonia Aissa

In this letter, a new detector is proposed for amplify-and-forward (AF) relaying system when communicating with the assistance of L relays. The major goal of this detector is to improve the bit error rate (BER) performance of the receiver. The probability density function is estimated with the help of kernel density technique. A generalized Gaussian kernel is proposed. This new kernel provides more flexibility and encompasses Gaussian and uniform kernels as special cases. The optimal window width of the kernel is calculated. Simulations results show that a gain of more than 1 dB can be achieved in terms of BER performance as compared to the minimum mean square error (MMSE) receiver when communicating over Rayleigh fading channels.

Published in:

IEEE Signal Processing Letters  (Volume:20 ,  Issue: 1 )