Pre-coding based multi-user OFDM system

Nerma, M.H.M. and Kamel, N. and Min, Y.K. and Jeoti, V. (2007) Pre-coding based multi-user OFDM system. In: UNSPECIFIED.

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Abstract

In most communication system, multiple users need to be supported. In OFDM systems, multiple access is achieved through combining TDMA and FDMA. OFDM supports multiusers with popular multiple access schemes, these schemes are MC - CDMA and OFDMA. In this paper we propose a precoding based approach to multiple access in OFDM systems using singular value decomposition (SVD). The scheme is like a CDMA scheme, in that the entire bandwidth can be used at all times, except that it does not entail expanding the bandwidth. This scheme combats the Multiuser Interference (MUI) caused by other users. ©2007 IEEE.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: cited By 0; Conference of 2007 International Conference on Intelligent and Advanced Systems, ICIAS 2007 ; Conference Date: 25 November 2007 Through 28 November 2007; Conference Code:74506
Uncontrolled Keywords: CDMA; FDMA; MC - CDMA; Multiuser Interference (MUI); OFDM; OFDMA; Orthogonaltriangular decomposition (QR); Pre-coding; Singular value decomposition (SVD); TDMA, Code division multiple access; Communication systems; Frequency allocation; Frequency division multiple access; Frequency division multiplexing; Multicarrier modulation; Orthogonal frequency division multiplexing; Programming theory; Semiconductor counters; Telecommunication systems; Time division multiple access, Singular value decomposition
Depositing User: Mr Ahmad Suhairi UTP
Date Deposited: 09 Nov 2023 15:15
Last Modified: 09 Nov 2023 15:15
URI: https://khub.utp.edu.my/scholars/id/eprint/183

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