Fractionally Spread Multicarrier CDMA: A Multiple-Access Scheme for Various Wireless Channels
Fractionally Spread Multicarrier CDMA: A Multiple-Access Scheme for Various Wireless Channels
In multicarrier code-division multiple-access (MCCDMA) the total system bandwidth is divided into a number of subbands, where each subband may use direct-sequence (DS) spreading and each subband signal is transmitted using a subcarrier frequency. In this contribution we divide the symbol duration into a number of fractional sub-symbol durations also referred to here as fractions, in a manner analogous to subbands in MCCDMA systems. In the proposed MC-CDMA scheme the data streams are spread at both the symbol-fraction level and at the chip level by the transmitter, and hence the proposed scheme is referred to as the fractionally-spread MC-CDMA arrangement, or FS MC-CDMA. In comparison to conventional MC-CDMA schemes, which are suitable for communications over frequency selective fading channels, our study demonstrates that the proposed FS MC-CDMA is capable of efficiently exploiting both the frequency-selective and the time-selective characteristics of wireless channels.
270-274
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
2003
Yang, L-L.
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Yang, L-L. and Hanzo, L.
(2003)
Fractionally Spread Multicarrier CDMA: A Multiple-Access Scheme for Various Wireless Channels.
PIMRC'2003, , Beijing, China.
07 - 10 Sep 2003.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
In multicarrier code-division multiple-access (MCCDMA) the total system bandwidth is divided into a number of subbands, where each subband may use direct-sequence (DS) spreading and each subband signal is transmitted using a subcarrier frequency. In this contribution we divide the symbol duration into a number of fractional sub-symbol durations also referred to here as fractions, in a manner analogous to subbands in MCCDMA systems. In the proposed MC-CDMA scheme the data streams are spread at both the symbol-fraction level and at the chip level by the transmitter, and hence the proposed scheme is referred to as the fractionally-spread MC-CDMA arrangement, or FS MC-CDMA. In comparison to conventional MC-CDMA schemes, which are suitable for communications over frequency selective fading channels, our study demonstrates that the proposed FS MC-CDMA is capable of efficiently exploiting both the frequency-selective and the time-selective characteristics of wireless channels.
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Published date: 2003
Additional Information:
Event Dates: 7-10 September 2003
Venue - Dates:
PIMRC'2003, , Beijing, China, 2003-09-07 - 2003-09-10
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 258428
URI: http://eprints.soton.ac.uk/id/eprint/258428
PURE UUID: 19fc6fbb-f7fe-408e-9603-26c044b03a17
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Date deposited: 30 Oct 2003
Last modified: 18 Mar 2024 02:49
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Contributors
Author:
L-L. Yang
Author:
L. Hanzo
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