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Upper Bounds on Overloaded LDPC–Optimum Combinied System Over Rayleigh Fading Channel

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Abstract

In this paper a closed form expression for the bit error rate of LDPC–OC system in the presence of interferers is derived over an i.i.d Rayleigh fading channel using message passing algorithm. All interferers are assumed to have equal power. The analysis is done for the case when the number of interferes is more than the number of receive antenna elements. In this paper, analytical results showed that for a BER of 10−2, the LDPC–OC system provides an additional gain of 6.3 dB over OC system alone. Both the systems provide identical diversity gain of 1.2 dB when the number of receive antennas are increased from 5 to 6.

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Acknowledgments

This study is supported by UGC and AICTE India vide letter no 31-1(pun)/sr-2008 TU and letter number 8023/BOR/RID/RPS-105/2008-2009.

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Authors and Affiliations

  1. Department of Electronics and Communication Engineering, Thapar University Patiala, Patiala, 147004, Punjab, India

    Surbhi Sharma & Rajesh Khanna

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  1. Surbhi Sharma
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  2. Rajesh Khanna
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Correspondence to Surbhi Sharma.

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Sharma, S., Khanna, R. Upper Bounds on Overloaded LDPC–Optimum Combinied System Over Rayleigh Fading Channel. Wireless Pers Commun 83, 1331–1339 (2015). https://doi.org/10.1007/s11277-015-2452-9

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