A de-correlated delay locked loop for direct sequence spread spectrum systems in a multi-user environment

W. K. Wong

doi:10.1109/MILCOM.2001.986082

A de-correlated delay locked loop for direct sequence spread spectrum systems in a multi-user environment

W. K. Wong^*

^*Corresponding author for this work

Department of Electrical Engineering

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

8 Citations (Scopus)

Abstract

Traditional delay locked loops are well-proven techniques for tracking the pseudo noise sequence for a single user condition. However, serious degradations may occur in a multi-user environment. For example, the loop may become unstable under conditions of large multiple access interference. A novel de-correlated delay locked loop is presented in this paper for synchronous direct sequence spread spectrum systems. It de-correlates the MAI caused by interfering users at the zero timing offset instant and achieves a better S curve. Computer simulations based on Gold code sequences are used to verify the results.

Original language	English
Title of host publication	2001 MILCOM Proceedings
Subtitle of host publication	Communications for Network-Centric Operations: Creating the Information Force
Publisher	IEEE
Pages	1384-1388
Volume	2
ISBN (Electronic)	0-7803-7226-3, 0-7803-7227-1
ISBN (Print)	0-7803-7225-5
DOIs	https://doi.org/10.1109/MILCOM.2001.986082
Publication status	Published - Oct 2001
Event	2001 Military Communications Conference (Milcom 2001): Communications for Network-Centric: Creating the Information Force - McLean, VA, United States Duration: 28 Oct 2001 → 31 Oct 2001

Conference

Conference	2001 Military Communications Conference (Milcom 2001)
Place	United States
City	McLean, VA
Period	28/10/01 → 31/10/01

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10.1109/MILCOM.2001.986082

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@inproceedings{155c1c785e3d4c89b1d07cca47939133,

title = "A de-correlated delay locked loop for direct sequence spread spectrum systems in a multi-user environment",

abstract = "Traditional delay locked loops are well-proven techniques for tracking the pseudo noise sequence for a single user condition. However, serious degradations may occur in a multi-user environment. For example, the loop may become unstable under conditions of large multiple access interference. A novel de-correlated delay locked loop is presented in this paper for synchronous direct sequence spread spectrum systems. It de-correlates the MAI caused by interfering users at the zero timing offset instant and achieves a better S curve. Computer simulations based on Gold code sequences are used to verify the results.",

author = "Wong, \{W. K.\}",

year = "2001",

month = oct,

doi = "10.1109/MILCOM.2001.986082",

language = "English",

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volume = "2",

pages = "1384--1388",

booktitle = "2001 MILCOM Proceedings",

publisher = "IEEE",

address = "United States",

note = "2001 Military Communications Conference (Milcom 2001) : Communications for Network-Centric: Creating the Information Force ; Conference date: 28-10-2001 Through 31-10-2001",

}

Wong, WK 2001, A de-correlated delay locked loop for direct sequence spread spectrum systems in a multi-user environment. in 2001 MILCOM Proceedings: Communications for Network-Centric Operations: Creating the Information Force. vol. 2, IEEE, pp. 1384-1388, 2001 Military Communications Conference (Milcom 2001), McLean, VA, United States, 28/10/01. https://doi.org/10.1109/MILCOM.2001.986082

A de-correlated delay locked loop for direct sequence spread spectrum systems in a multi-user environment. / Wong, W. K.
2001 MILCOM Proceedings: Communications for Network-Centric Operations: Creating the Information Force. Vol. 2 IEEE, 2001. p. 1384-1388.

Research output: Chapters, Conference Papers, Creative and Literary Works › RGC 32 - Refereed conference paper (with host publication) › peer-review

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AU - Wong, W. K.

PY - 2001/10

Y1 - 2001/10

N2 - Traditional delay locked loops are well-proven techniques for tracking the pseudo noise sequence for a single user condition. However, serious degradations may occur in a multi-user environment. For example, the loop may become unstable under conditions of large multiple access interference. A novel de-correlated delay locked loop is presented in this paper for synchronous direct sequence spread spectrum systems. It de-correlates the MAI caused by interfering users at the zero timing offset instant and achieves a better S curve. Computer simulations based on Gold code sequences are used to verify the results.

AB - Traditional delay locked loops are well-proven techniques for tracking the pseudo noise sequence for a single user condition. However, serious degradations may occur in a multi-user environment. For example, the loop may become unstable under conditions of large multiple access interference. A novel de-correlated delay locked loop is presented in this paper for synchronous direct sequence spread spectrum systems. It de-correlates the MAI caused by interfering users at the zero timing offset instant and achieves a better S curve. Computer simulations based on Gold code sequences are used to verify the results.

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DO - 10.1109/MILCOM.2001.986082

M3 - RGC 32 - Refereed conference paper (with host publication)

SN - 0-7803-7225-5

VL - 2

SP - 1384

EP - 1388

BT - 2001 MILCOM Proceedings

PB - IEEE

T2 - 2001 Military Communications Conference (Milcom 2001)

Y2 - 28 October 2001 through 31 October 2001

ER -

A de-correlated delay locked loop for direct sequence spread spectrum systems in a multi-user environment

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