An efficient subcarrier assignment algorithm for downlink OFDMA

Carle Lengoumbi; Philippe Godlewski; Philippe Martins

doi:10.1109/VTCF.2006.264

An efficient subcarrier assignment algorithm for downlink OFDMA

Carle Lengoumbi
, Philippe Godlewski
, Philippe Martins

CNRS LTCI

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

In this paper, the Rate Adaptive optimization (RA) problem, which maximizes the sum of user data rates subject to total power constraint and individual guaranteed rates, is considered. Two tasks are commonly examined: bandwidth allocation and specific subcarrier assignment. A mechanism to provide a degree of fairness among users is coupled with the first task. Considering the second task, a novel algorithm, Rate Profit Optimization algorithm (RPO), is defined to assign specific subcarriers to different devices of a multiuser downlink OFDM system. In RPO, a new approach is proposed to assign a conflicting subcarrier (best subcarrier for several users). This algorithm is shown to exhibit good results regarding spectral efficiency and fairness with a complexity significantly lower than the Hungarian algorithm.

Original language	English
Title of host publication	2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
Pages	1258-1262
Number of pages	5
DOIs	https://doi.org/10.1109/VTCF.2006.264
Publication status	Published - 1 Dec 2006
Externally published	Yes
Event	2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall - Montreal, QC, Canada Duration: 25 Sept 2006 → 28 Sept 2006

Publication series

Name	IEEE Vehicular Technology Conference
ISSN (Print)	1550-2252

Conference

Conference	2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall
Country/Territory	Canada
City	Montreal, QC
Period	25/09/06 → 28/09/06

Keywords

Fairness
OFDMA
Rate Adaptive optimization
Subcarrier assignment

Access to Document

10.1109/VTCF.2006.264

Cite this

@inproceedings{13d6bc00bb684fb08b63b2ae96601b50,

title = "An efficient subcarrier assignment algorithm for downlink OFDMA",

abstract = "In this paper, the Rate Adaptive optimization (RA) problem, which maximizes the sum of user data rates subject to total power constraint and individual guaranteed rates, is considered. Two tasks are commonly examined: bandwidth allocation and specific subcarrier assignment. A mechanism to provide a degree of fairness among users is coupled with the first task. Considering the second task, a novel algorithm, Rate Profit Optimization algorithm (RPO), is defined to assign specific subcarriers to different devices of a multiuser downlink OFDM system. In RPO, a new approach is proposed to assign a conflicting subcarrier (best subcarrier for several users). This algorithm is shown to exhibit good results regarding spectral efficiency and fairness with a complexity significantly lower than the Hungarian algorithm.",

keywords = "Fairness, OFDMA, Rate Adaptive optimization, Subcarrier assignment",

author = "Carle Lengoumbi and Philippe Godlewski and Philippe Martins",

year = "2006",

month = dec,

day = "1",

doi = "10.1109/VTCF.2006.264",

language = "English",

isbn = "1424400635",

series = "IEEE Vehicular Technology Conference",

pages = "1258--1262",

booktitle = "2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall",

note = "2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall ; Conference date: 25-09-2006 Through 28-09-2006",

}

Lengoumbi, C, Godlewski, P & Martins, P 2006, An efficient subcarrier assignment algorithm for downlink OFDMA. in 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall., 4109529, IEEE Vehicular Technology Conference, pp. 1258-1262, 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall, Montreal, QC, Canada, 25/09/06. https://doi.org/10.1109/VTCF.2006.264

TY - GEN

T1 - An efficient subcarrier assignment algorithm for downlink OFDMA

AU - Lengoumbi, Carle

AU - Godlewski, Philippe

AU - Martins, Philippe

PY - 2006/12/1

Y1 - 2006/12/1

N2 - In this paper, the Rate Adaptive optimization (RA) problem, which maximizes the sum of user data rates subject to total power constraint and individual guaranteed rates, is considered. Two tasks are commonly examined: bandwidth allocation and specific subcarrier assignment. A mechanism to provide a degree of fairness among users is coupled with the first task. Considering the second task, a novel algorithm, Rate Profit Optimization algorithm (RPO), is defined to assign specific subcarriers to different devices of a multiuser downlink OFDM system. In RPO, a new approach is proposed to assign a conflicting subcarrier (best subcarrier for several users). This algorithm is shown to exhibit good results regarding spectral efficiency and fairness with a complexity significantly lower than the Hungarian algorithm.

AB - In this paper, the Rate Adaptive optimization (RA) problem, which maximizes the sum of user data rates subject to total power constraint and individual guaranteed rates, is considered. Two tasks are commonly examined: bandwidth allocation and specific subcarrier assignment. A mechanism to provide a degree of fairness among users is coupled with the first task. Considering the second task, a novel algorithm, Rate Profit Optimization algorithm (RPO), is defined to assign specific subcarriers to different devices of a multiuser downlink OFDM system. In RPO, a new approach is proposed to assign a conflicting subcarrier (best subcarrier for several users). This algorithm is shown to exhibit good results regarding spectral efficiency and fairness with a complexity significantly lower than the Hungarian algorithm.

KW - Fairness

KW - OFDMA

KW - Rate Adaptive optimization

KW - Subcarrier assignment

UR - https://www.scopus.com/pages/publications/34548846677

U2 - 10.1109/VTCF.2006.264

DO - 10.1109/VTCF.2006.264

M3 - Conference contribution

AN - SCOPUS:34548846677

SN - 1424400635

SN - 9781424400638

T3 - IEEE Vehicular Technology Conference

SP - 1258

EP - 1262

BT - 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall

T2 - 2006 IEEE 64th Vehicular Technology Conference, VTC-2006 Fall

Y2 - 25 September 2006 through 28 September 2006

ER -

An efficient subcarrier assignment algorithm for downlink OFDMA

Abstract

Publication series

Conference

Keywords

Access to Document

Other files and links

Fingerprint

Cite this