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Abstract

In this letter, we analyze the bit error rate (BER) performance of a multiple input multiple output (MIMO) based cognitive radio system in equicorrelated Rayleigh fading channels. The system is assumed to implement energy detection for spectrum sensing and fixed power control for secondary user transmission. We develop an alternate closed form expression of BER when the MIMO link between the secondary users is implemented using orthogonal space time block codes (OSTBC). We also propose a novel infinite series expression of BER when transmit antenna selection with maximal ratio combining (TAS/MRC) is used instead of OSTBC. We observe that the existing work on analyzing the BER of MIMO systems implementing TAS/MRC in correlated fading channels, implicitly or explicitly assumes correlation to be absent on the transmitter side. We overcome this shortcoming by considering correlation on both the transmitter and receiver sides of the MIMO system.

Keywords

Cognitive radio system MIMO OSTBC TAS/MRC fixed power control energy detection Rayleigh fading equicorrelated.

Article Details

Authors retain the copyright without restrictions for their published content in this journal. IJSRTM is a SHERPA ROMEO Journal. 

Publishing License

This is an open-access article distributed under the terms of  Creative Commons License

How to Cite
Suman, S. (2015). BER ANALYSIS OF A MIMO BASED COGNITIVE RADIO SYSTEM IMPLEMENTING OSTBC AND TAS/MRC IN EQUICORRELATED RAYLEIGH FADING CHANNELS. Students’ Research in Technology & Management, 1(4), 407-415. Retrieved from https://giapjournals.com/ijsrtm/article/view/84

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