Throughput Improvement of STS-Based MC DS-CDMA System with Variable Spreading Factor
The throughput enhancement of Space-Time Spreading (STS)-based Multicarrier Direct Sequence Code Division Multiple Access (MC DS-CDMA) system is investigated in this paper. Variable Spreading Factor (VSF) is utilized to improve the data throughput of the system. In this contribution, an analytical a...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Iran University of Science and Technology
2009-03-01
|
| Series: | Iranian Journal of Electrical and Electronic Engineering |
| Subjects: | |
| Online Access: | http://ijeee.iust.ac.ir/browse.php?a_code=A-10-3-76&slc_lang=en&sid=1 |
| Summary: | The throughput enhancement of Space-Time Spreading (STS)-based Multicarrier
Direct Sequence Code Division Multiple Access (MC DS-CDMA) system is investigated in
this paper. Variable Spreading Factor (VSF) is utilized to improve the data throughput of
the system. In this contribution, an analytical approach is proposed to compute a new
expression for the Bit Error Rate (BER) performance of the STS-based MC DS-CDMA
system against pre-dispreading Signal-to-Noise Ratio (SNR) for different values of
spreading factor (SF). The other contribution of the paper is deriving a new closed form
expression for computing the throughput enhancement and the BER performance of the
VSF STS-based MC DS-CDMA system over Rayleigh fading channel. It is demonstrated
that using VSF method in STS-based MC DS-CDMA system improves the throughput of
the system by keeping the BER performance at the target level. |
|---|---|
| ISSN: | 1735-2827 2383-3890 |