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Cognitive radio network based DSTTD-CDMA system

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Abstract

In this contribution, the performance of double space time transmit diversity (DSTTD) based multiple-input and multiple-output system with spatial diversity is investigated for cognitive radio network (CRN) based code-division-multiple-access (CDMA) system. CRN is realized in order to invoke available idle spectrum for reliable communication between base station and mobile station. DSTTD is constructed using two space- time processing unit. DSTTD is proven to provide high throughput .The user-specific spreading code is generated using sub-band frequency of CRN. Time-Frequency domain signature sequence is exploited to distinguish secondary users. The performance of CRN based DSTTD-CDMA scheme is analyzed using coded system. At each MS, iterative type of decoder is implemented to estimate secondary users’ information. The performance is analyzed for coded CRN based DSTTD-CDMA system for channel model with Stanford University Interim along with long-term evolution specifications. It is observed through simulation results that coded CR DSTTD-CDMA system establish proficient communication for secondary users while offering higher throughput and higher spectral efficiency and better performance in the context of bit-error-rate with fewer value of signal-to-noise ratio. Further, it is discerned that decoding algorithm obviate adjacent-channel interference along with secondary multi-user interference and CRN based CDMA system in conjunction DSTTD offers solution for high data rate application.

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Authors and Affiliations

  1. Department of ECE, SSN College of Engineering, Chennai, India

    R. Dhilip Kumar, K. S. Vishvaksenan & K. Mithra

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  1. R. Dhilip Kumar
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  2. K. S. Vishvaksenan
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  3. K. Mithra
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Correspondence to R. Dhilip Kumar.

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Kumar, R.D., Vishvaksenan, K.S. & Mithra, K. Cognitive radio network based DSTTD-CDMA system. Cluster Comput 22 (Suppl 4), 8561–8567 (2019). https://doi.org/10.1007/s10586-018-1902-z

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