Cognitive radio network based DSTTD-CDMA system

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.

[1]  K. S. Vishvaksenan,et al.  Performance of Dual-Polarized DSTTD-IDMA system over correlated frequency selective channels , 2014, Comput. Electr. Eng..

[2]  Gerard J. Foschini,et al.  Layered space-time architecture for wireless communication in a fading environment when using multi-element antennas , 1996, Bell Labs Technical Journal.

[3]  Yinman Lee,et al.  A Simple Layered Space-Time Block Nulling Technique for DSTTD Systems , 2011, IEEE Communications Letters.

[4]  Angela Doufexi,et al.  Adaptive MIMO OFDMA for Future Generation Cellular Systems in a Realistic Outdoor Environment , 2006, 2006 IEEE 63rd Vehicular Technology Conference.

[5]  R. Karthipan,et al.  Performance of turbo coded triply-Polarized MIMO-CDMA system for downlink communication , 2016, Comput. Electr. Eng..

[6]  Guillem Femenias,et al.  BER performance of linear STBC from orthogonal designs over MIMO correlated Nakagami-m fading channels , 2004, IEEE Transactions on Vehicular Technology.

[7]  K. S. Vishvaksenan,et al.  Multi-cell DSTTD-IDMA system using transmitter pre-processing , 2016, 2016 International Conference on Wireless Communications, Signal Processing and Networking (WiSPNET).

[8]  S. Leela,et al.  Performance of adaptive MIMO switching for cognitive MC-CDMA system , 2017, Cluster Computing.

[9]  Jingxian Wu,et al.  Error Performance of Double Space Time Transmit Diversity System , 2006, 2006 IEEE International Conference on Communications.

[10]  Laurence B. Milstein,et al.  Performance of multicarrier DS CDMA systems , 1996, IEEE Trans. Commun..

[11]  K. Mohamed-pour,et al.  A new structure for NC-MC-CDMA in cognitive radio networks , 2009, 2009 9th International Symposium on Communications and Information Technology.

[12]  A. Robert Calderbank,et al.  Space-Time block codes from orthogonal designs , 1999, IEEE Trans. Inf. Theory.

[13]  Salama Ikki,et al.  On the Performance Analysis of a MIMO-Relaying Scheme With Space–Time Block Codes , 2010, IEEE Transactions on Vehicular Technology.

[14]  K. S. Vishvaksenan,et al.  Performance of coded STBC-IDMA system using polarization diversity for downlink transmission , 2017, Cluster Computing.

[15]  Siavash M. Alamouti,et al.  A simple transmit diversity technique for wireless communications , 1998, IEEE J. Sel. Areas Commun..

[16]  K. S. Vishvaksenan,et al.  Performance of spectrum sharing cognitive radio network based on MIMO MC-CDMA system for medical image transmission , 2017, Cluster Computing.

[17]  K. S. Vishvaksenan,et al.  Performance of a turbo-coded downlink IDMA system using transmitter pre-processing , 2016, Comput. Electr. Eng..

[18]  K. S. Vishvaksenan,et al.  System analysis of DSTTD-CDMA system with polarization diversity for frequency-selective channel , 2018, Comput. Electr. Eng..