A Low-Complexity Subcarrier-Power Allocation Scheme for Frequency-Division Multiple-Access Systems
A Low-Complexity Subcarrier-Power Allocation Scheme for Frequency-Division Multiple-Access Systems
This letter aims to design a low-complexity subcarrier-power allocation scheme to improve the communication reliability of various types of frequency-division multiple-access (FDMA) systems. Both uplink and downlink are considered. Specifically, a low-complexity worst subcarrier avoiding (WSA) subcarrier-allocation scheme is proposed, in order to avoid assigning users the subcarriers experiencing severe fading. After the subcarrier-allocation, channel-inversion assisted powerallocation is employed to assign the subcarriers the corresponding power. Our studies and simulation results show that the achievable error performance of the FDMA systems employing the proposed subcarrier-power allocation algorithm is independent of the multiplexing method. The proposed algorithm outperforms the existing subcarrier-power allocation algorithms that have a similar complexity as the proposed one.
1571-1576
Liu, Tingting
88a2fd8d-bd0b-413f-9e71-8a706023ffa3
Yang, Chenyang
b189df03-b59c-4d93-9729-54db02bc2b74
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
May 2010
Liu, Tingting
88a2fd8d-bd0b-413f-9e71-8a706023ffa3
Yang, Chenyang
b189df03-b59c-4d93-9729-54db02bc2b74
Yang, Lie-Liang
ae425648-d9a3-4b7d-8abd-b3cfea375bc7
Liu, Tingting, Yang, Chenyang and Yang, Lie-Liang
(2010)
A Low-Complexity Subcarrier-Power Allocation Scheme for Frequency-Division Multiple-Access Systems.
IEEE Transactions on Wireless Communications, 9 (5), .
Abstract
This letter aims to design a low-complexity subcarrier-power allocation scheme to improve the communication reliability of various types of frequency-division multiple-access (FDMA) systems. Both uplink and downlink are considered. Specifically, a low-complexity worst subcarrier avoiding (WSA) subcarrier-allocation scheme is proposed, in order to avoid assigning users the subcarriers experiencing severe fading. After the subcarrier-allocation, channel-inversion assisted powerallocation is employed to assign the subcarriers the corresponding power. Our studies and simulation results show that the achievable error performance of the FDMA systems employing the proposed subcarrier-power allocation algorithm is independent of the multiplexing method. The proposed algorithm outperforms the existing subcarrier-power allocation algorithms that have a similar complexity as the proposed one.
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Tingting-TWCOM-05463212-2.pdf
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Published date: May 2010
Organisations:
Southampton Wireless Group
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Local EPrints ID: 272641
URI: http://eprints.soton.ac.uk/id/eprint/272641
PURE UUID: 2d0e69bc-477c-4f65-a44a-179d6f8576af
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Date deposited: 05 Aug 2011 16:56
Last modified: 15 Mar 2024 02:59
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Author:
Tingting Liu
Author:
Chenyang Yang
Author:
Lie-Liang Yang
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