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Time-Frequency Spread OFDM/FHMA

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
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, Korea, Republic of. 22 - 25 Apr 2003. pp. 1248-1252 .

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.

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More information

Published date: 2003
Additional Information: Event Dates: 22-25 April 2003
Venue - Dates: VTC'2003 (Spring), 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
ORCID for L. Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 01 Dec 2003
Last modified: 20 Jul 2019 01:26

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