Multicarrier DS-CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
Multicarrier DS-CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications
In this article we identify some of the key problems that may be encountered when designing a broadband multiple access system with bandwidth on the order of tens or even hundreds of megahertz. We commence with a comparative discussion in terms of the characteristics of three typical code-division multiple access schemes: single-carrier directsequence CDMA (SC DS-CDMA), multicarrier CDMA (MC-CDMA), and multicarrier DSCDMA (MC DS-CDMA). Specifically, their benefits and deficiencies are analyzed when aiming to support ubiquitous communications over a variety of channels encountered in indoor, open rural, suburban, and urban environments. It is shown that when communicating in such diverse environments, both SC DSCDMA and MC-CDMA exhibit certain limitations that are hard to circumvent. By contrast, when appropriately selecting the system parameters and using transmit diversity, MC DSCDMA becomes capable of adapting to such diverse propagation environments at a reasonable detection complexity.
116-124
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
October 2003
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Yang, L-L. and Hanzo, L.
(2003)
Multicarrier DS-CDMA: A Multiple Access Scheme for Ubiquitous Broadband Wireless Communications.
IEEE Communications Magazine, .
Abstract
In this article we identify some of the key problems that may be encountered when designing a broadband multiple access system with bandwidth on the order of tens or even hundreds of megahertz. We commence with a comparative discussion in terms of the characteristics of three typical code-division multiple access schemes: single-carrier directsequence CDMA (SC DS-CDMA), multicarrier CDMA (MC-CDMA), and multicarrier DSCDMA (MC DS-CDMA). Specifically, their benefits and deficiencies are analyzed when aiming to support ubiquitous communications over a variety of channels encountered in indoor, open rural, suburban, and urban environments. It is shown that when communicating in such diverse environments, both SC DSCDMA and MC-CDMA exhibit certain limitations that are hard to circumvent. By contrast, when appropriately selecting the system parameters and using transmit diversity, MC DSCDMA becomes capable of adapting to such diverse propagation environments at a reasonable detection complexity.
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lly-lh-CommMag-oct03.pdf
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Published date: October 2003
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 258421
URI: http://eprints.soton.ac.uk/id/eprint/258421
PURE UUID: a5043294-b1c8-431a-9134-0ee4b5059e76
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Date deposited: 04 Nov 2003
Last modified: 18 Mar 2024 02:49
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Author:
L-L. Yang
Author:
L. Hanzo
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