Performance analysis of DS-CDMA wireless communication system with and without diversity

Author

Das Gupta, Shuvashis ; Shomaji, Sumaiya ; Islam, Farzana ; Hasan, T. ; Ahmed, Zabir

Author_Institution

Dept. of Electr. & Electron. Eng., Ahsanullah Univ. of Sci. & Technol., Dhaka, Bangladesh

fYear

2014

fDate

8-10 March 2014

Firstpage

166

Lastpage

171

Abstract

In this paper, performance of a novel analytic model of direct sequence code division multiple accesses (DS-CDMA) using diversity with maximal ratio combining (MRC) scheme is observed under the influence of multipath Rayleigh fading and multi-access interference (MAI) varying different system parameters and properties of PN sequences. The analysis presents a mathematical expression for bit error rate (BER) of the novel DS-CDMA model using diversity with MRC when signal to interference plus noise ratio (SINR) per bit follows a chi-square distribution. Performance results are evaluated in terms of average bit error rate (BER) at the output of MRC receiver by averaging the conditional BER over the probability density function (pdf) of signal to interference plus noise ratio (SINR). In addition to that the receiver sensitivity of the model is observed for different transmit and receive diversity in a proposed multiple input multiple output (MIMO) system model varying Rayleigh fading co-efficient. Variants of simulation result at various cases are also analyzed.

Keywords

MIMO communication; Rayleigh channels; code division multiple access; diversity reception; error statistics; radio receivers; spread spectrum communication; statistical distributions; BER mathematical expression; DS-CDMA model; DS-CDMA wireless communication system performance analysis; MAI; MIMO system model; MRC receiver sensitivity; PDF; PN sequence properties; SINR; bit error rate; chi-square distribution; direct sequence code division multiple accesses; diversity receival; diversity transmission; maximal ratio combining scheme; multiaccess interference; multipath Rayleigh fading coefficient; multiple input multiple output system model; probability density function; signal to interference plus noise ratio; Bit error rate; Diversity reception; Fading; MIMO; Multiaccess communication; Receivers; Signal to noise ratio; BER; DS-CDMA; Diversity; MIMO; MRC; SINR;

fLanguage

English

Publisher

ieee

Conference_Titel

Computer and Information Technology (ICCIT), 2013 16th International Conference on

Conference_Location

Khulna

Type

conf

DOI

10.1109/ICCITechn.2014.6997326

Filename

6997326