Throughput Analysis of STS-based CDMA System with Variable Spreading Factor in Non-Frequency Selective Rayleigh Fading Channel

Paper title

“Throughput Analysis of STS-based CDMA System with Variable Spreading Factor in Non-Frequency Selective Rayleigh Fading Channel”

Authors: Vahideh Vakil and Hassan Aghaeinia
Affiliation: Electrical Engineering Department, Amirkabir University of Technology, Tehran, Iran.

Abstract — This paper investigates the application of Variable Spreading Factor (VSF) method in Space-Time Spreading (STS)-based Code Division Multiple Access (CDMA) system to improve the data throughput of the system. In this contribution an analytical approach to compute the throughput enhancement of the STS-based CDMA system with VSF method is proposed for nonfrequency- selective Rayleigh fading channel. The Bit Error Rate (BER) performance of the system against predespreading Signal-to-Noise-Ratio (SNR) is also calculated for different values of spreading factor. Simulation and analytical results demonstrate that using VSF method in STS-based CDMA system improves the throughput of the system by keeping the BER performance at a target level.