Time-Frequency Spread OFDM/FHMA
Time-Frequency Spread OFDM/FHMA
A combined scheme based on Orthogonal Frequency-Division Multiplexing and Frequency-Hopped Multiple Access (OFDM/FHMA) is proposed, in which the transmitted data is spread over both the time and frequency axes without expanding the bandwidth. The OFDM system advocated employs the Walsh-Hadamard Transform (WHT) for spreading the data in the frequency domain and weights the received signal by the estimated Signal-to-Interference Ratio (SIR) for the sake of reducing the effects of interference. The performance recorded, when communicating over an interference-limited channel suggests that the achievable BER improvement is as much as an order of magnitude in comparison to that of an OFDM/FHMA scheme dispensing with WHT.
1248-1252
Hamaguchi, K.
53881aa5-7e8a-49fd-8f75-7a55e5693476
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
2003
Hamaguchi, K.
53881aa5-7e8a-49fd-8f75-7a55e5693476
Hanzo, L.
66e7266f-3066-4fc0-8391-e000acce71a1
Hamaguchi, K. and Hanzo, L.
(2003)
Time-Frequency Spread OFDM/FHMA.
VTC'2003 (Spring), Jeju Island, Jeju, Korea, Republic of.
22 - 25 Apr 2003.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A combined scheme based on Orthogonal Frequency-Division Multiplexing and Frequency-Hopped Multiple Access (OFDM/FHMA) is proposed, in which the transmitted data is spread over both the time and frequency axes without expanding the bandwidth. The OFDM system advocated employs the Walsh-Hadamard Transform (WHT) for spreading the data in the frequency domain and weights the received signal by the estimated Signal-to-Interference Ratio (SIR) for the sake of reducing the effects of interference. The performance recorded, when communicating over an interference-limited channel suggests that the achievable BER improvement is as much as an order of magnitude in comparison to that of an OFDM/FHMA scheme dispensing with WHT.
Text
kh-lh-vtc03spring.pdf
- Other
More information
Published date: 2003
Additional Information:
Event Dates: 22-25 April 2003
Venue - Dates:
VTC'2003 (Spring), Jeju Island, Jeju, Korea, Republic of, 2003-04-22 - 2003-04-25
Organisations:
Southampton Wireless Group
Identifiers
Local EPrints ID: 258382
URI: http://eprints.soton.ac.uk/id/eprint/258382
PURE UUID: e8eed3ad-3efa-46f8-840d-349fa35d7f19
Catalogue record
Date deposited: 01 Dec 2003
Last modified: 18 Mar 2024 02:33
Export record
Contributors
Author:
K. Hamaguchi
Author:
L. Hanzo
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics