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128281

Performance Analysis of Sliding Window Multiuser Detectors used in Asynchronous DS-CDMA Systems.

Article

Last updated: 04 Jan 2025

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Tags

Electrical Engineering

Abstract

In this paper, the sliding-window method is applied on both decorrelating and linear minimum mean-squared error (LMMSE) multiuser detectors. The analytical expressions for the error probability of those multiuser detectors (MUDs) are derived. The analysis is presented for asynchronous direct sequence code-division multiple access (DS-CDMA) in additive white Gaussian noise (AWGN) and multipath fading environment. The adopted detectors divide the received signal stream into processing windows and process them window by window. The effects of expanding the processing-window length on the error probabilities are investigated. The analysis shows that the error performance of the decorrelating detector is much better than that of the LMMSE detector when the power of the interfering users is larger than the desired user power. It is also shown that the performance of the presented detectors will be significantly improved with processing-window length up to four symbols. 

DOI

10.21608/bfemu.2020.128281

Keywords

decorrelating detectors, AWGN, LMMSE, Mud, RAKE, NF problem

Authors

First Name

Mohamed

Last Name

Samy

MiddleName

-

Affiliation

Electrical Engineering Department., Faculty of Engineering at Port Said., Suez Canal University., Suez., Egypt

Email

-

City

Suez

Orcid

-

First Name

Mohamed

Last Name

El-Dakiky

MiddleName

-

Affiliation

Electrical Engineering Department., Faculty of Engineering at Port Said., Suez Canal University., Egypt

Email

-

City

-

Orcid

-

First Name

Islam

Last Name

Shaalan

MiddleName

-

Affiliation

Electrical Engineering Department., Faculty of Engineering at Port Said., Suez Canal University.

Email

-

City

-

Orcid

-

Volume

32

Article Issue

2

Related Issue

19076

Issue Date

2007-06-01

Receive Date

2007-03-11

Publish Date

2020-12-07

Page Start

19

Page End

33

Print ISSN

1110-0923

Online ISSN

2735-4202

Article File

BFEMU_Volume 32_Issue 2_Pages 19-33.pdf

PDF . 499.4kB

Link

https://bfemu.journals.ekb.eg/article_128281.html

Detail API

https://bfemu.journals.ekb.eg/service?article_code=128281

Order

8

Type

Research Studies

Type Code

1,205

Publication Type

Journal

Publication Title

MEJ. Mansoura Engineering Journal

Publication Link

https://bfemu.journals.ekb.eg/

MainTitle

Performance Analysis of Sliding Window Multiuser Detectors used in Asynchronous DS-CDMA Systems.

Details

Type

Article

Created At

22 Jan 2023