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Ergodic Channel Capacity for Rayleigh Fading Channels with Impairments Due to Errors in M-Branch Hybrid Diversity Combining

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Abstract

Novel closed-form expressions are derived for Ergodic channel capacity for fading channels with impairments due to combining errors for M-branch Rayleigh fading with Generalized Diversity Combining. Four different adaptation policies are analyzed for (1) maximal ratio combining (MRC) diversity, (2) spread spectrum (SS) diversity with MRC and Antenna diversity with selection combining (SC), and (3) SS diversity with SC and Antenna diversity with MRC diversity reception cases. Correlation is defined physically as the similarity between the channel coefficients of the pilot and the message. If the pilot and the message are highly correlated, we have a high system performance. Optimal power and rate adaptation policy yields the best spectrum efficiency, while channel inversion with fixed rate policy suffers the highest penalty in comparison to other policies.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, SRM University, Kattankulathur, Tamilnadu, 603203, India

    J. Subhashini

  2. Department of Electrical and Computer Engineering, San Francisco State University, 1600 Holloway Avenue, San Francisco, CA, 94132, USA

    Vidhyacharan Bhaskar

  3. Department of Electrical Engineering, Northwestern Polytechnic University, 47671 Westinghouse Drive, Fremont, CA, 94539, USA

    Vidhyacharan Bhaskar

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  1. J. Subhashini
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  2. Vidhyacharan Bhaskar
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Correspondence to Vidhyacharan Bhaskar.

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Subhashini, J., Bhaskar, V. Ergodic Channel Capacity for Rayleigh Fading Channels with Impairments Due to Errors in M-Branch Hybrid Diversity Combining. Wireless Pers Commun 94, 1035–1056 (2017). https://doi.org/10.1007/s11277-016-3668-z

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