Optimum and Suboptimum Combining of Independent Class-A Noise Channels

Optimum and suboptimum combining is investigated for a 2-branch diversity system containing unique Class-A noise in each branch. Expressions for log-likelihood ratio (LLR) reveal that the optimum scheme can be viewed as a linear combiner which is conditioned on the Class-A state. Bit-error rate (BER) performance curves for BPSK demonstrate that use of a saturated Gaussian metric for low-complexity signal combining results in good performance. However, maximal ratio combining (MRC) performs poorly due to mismatch between the MRC LLR and the LLR for optimum schemes.

[1]  Cihan Tepedelenlioglu,et al.  On diversity reception over fading channels with impulsive noise , 2005, IEEE Global Telecommunications Conference, 2004. GLOBECOM '04..

[2]  Dario Fertonani,et al.  A robust metric for soft-output detection in the presence of class-A noise , 2009, IEEE Transactions on Communications.

[3]  A. Spaulding,et al.  Optimum Reception in an Impulsive Interference Environment - Part I: Coherent Detection , 1977, IEEE Transactions on Communications.

[4]  Ramjee Prasad,et al.  Performance analysis of cellular digital mobile radio systems including diversity techniques , 1997, Proceedings of 8th International Symposium on Personal, Indoor and Mobile Radio Communications - PIMRC '97.

[5]  David Middleton,et al.  Statistical-Physical Models of Electromagnetic Interference , 1977, IEEE Transactions on Electromagnetic Compatibility.

[6]  D. Middleton,et al.  Optimum Reception in an Impulsive Interference Environment - Part II: Incoherent Reception , 1977, IEEE Transactions on Communications.

[7]  Lutz H.-J. Lampe,et al.  Diversity combining for coherent and differential M-PSK in fading and class-A impulsive noise , 2005, IEEE Transactions on Wireless Communications.

[8]  K. Dostert,et al.  Analysis and modeling of impulsive noise in broad-band powerline communications , 2002 .

[9]  A. J. Han Vinck,et al.  Performance bounds for optimum and suboptimum reception under Class-A impulsive noise , 2002, IEEE Trans. Commun..

[10]  Ahmed Zeddam,et al.  MIMO communications for inhome PLC networks: Measurements and results up to 100 MHz , 2010, ISPLC2010.

[11]  F.-N. Pavlidou,et al.  Modeling the Noise on the OFDM Power-Line Communications System , 2010, IEEE Transactions on Power Delivery.

[12]  John G. Proakis,et al.  Digital Communications , 1983 .

[13]  Geoffrey G. Messier,et al.  The Wireless/Power-Line Diversity Channel , 2010, 2010 IEEE International Conference on Communications.

[14]  Lutz H.-J. Lampe,et al.  Convolutionally Coded Transmission over Markov-Gaussian Channels: Analysis and Decoding Metrics , 2010, IEEE Transactions on Communications.