Multi-user interference cancellation schemes for carrier frequency offset compensation in uplink OFDMA

Huan Cong Nguyen; Elisabeth De Carvalho; Ramjee Prasad

doi:10.1109/TWC.2014.021414.070718

Multi-user interference cancellation schemes for carrier frequency offset compensation in uplink OFDMA

Huan Cong Nguyen, Elisabeth De Carvalho, Ramjee Prasad

Institut for Elektroniske Systemer

Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › peer review

27 Citationer (Scopus)

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Abstract

Originalsprog	Engelsk
Tidsskrift	IEEE Transactions on Wireless Communications
ISSN	1536-1276
DOI	https://doi.org/10.1109/TWC.2014.021414.070718
Status	Udgivet - mar. 2014

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synchronization
OFDMA
uplink

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10.1109/TWC.2014.021414.070718

Hcn TWC paperIndsendt manuskript, 489 KB

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=6776577

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title = "Multi-user interference cancellation schemes for carrier frequency offset compensation in uplink OFDMA",

abstract = "Each user in the uplink of an Orthogonal Frequency Division Multiple Access (OFDMA) system may experience a different carrier frequency offset (CFO). These uncorrected CFOs destroy the orthogonality among subcarriers, causing inter-carrier interference and multi-user interference, which degrade the system performance severely. In this paper, novel time-domain multi-user interference cancellation schemes for OFDMA uplink are proposed. They employ an architecture with multiple and numerical evaluations show that the proposed schemes achieve a significant performance gain compared to the conventional receiver and a reference frequency-domain multi-user interference cancellation scheme. In a particular scenario, a maximum CFO of up to 40% of the subcarrier spacing can be tolerated, and the CFO-free performance is maintained in the OFDMA uplink. The proposed schemes outperform the multi-user interference cancellation techniques for Orthogonal Frequency Division Multiple Access (OFDMA) available in literature with comparable or lower complexity.",

keywords = "synchronization, OFDMA, uplink, synchronization, OFDMA, uplink, timing offset, frequency offset, multiuser, interference, cancellation",

author = "Nguyen, {Huan Cong} and {De Carvalho}, Elisabeth and Ramjee Prasad",

year = "2014",

month = mar,

doi = "10.1109/TWC.2014.021414.070718",

language = "English",

journal = "IEEE Transactions on Wireless Communications",

issn = "1536-1276",

publisher = "IEEE",

}

TY - JOUR

T1 - Multi-user interference cancellation schemes for carrier frequency offset compensation in uplink OFDMA

AU - Nguyen, Huan Cong

AU - De Carvalho, Elisabeth

AU - Prasad, Ramjee

PY - 2014/3

Y1 - 2014/3

N2 - Each user in the uplink of an Orthogonal Frequency Division Multiple Access (OFDMA) system may experience a different carrier frequency offset (CFO). These uncorrected CFOs destroy the orthogonality among subcarriers, causing inter-carrier interference and multi-user interference, which degrade the system performance severely. In this paper, novel time-domain multi-user interference cancellation schemes for OFDMA uplink are proposed. They employ an architecture with multiple and numerical evaluations show that the proposed schemes achieve a significant performance gain compared to the conventional receiver and a reference frequency-domain multi-user interference cancellation scheme. In a particular scenario, a maximum CFO of up to 40% of the subcarrier spacing can be tolerated, and the CFO-free performance is maintained in the OFDMA uplink. The proposed schemes outperform the multi-user interference cancellation techniques for Orthogonal Frequency Division Multiple Access (OFDMA) available in literature with comparable or lower complexity.

AB - Each user in the uplink of an Orthogonal Frequency Division Multiple Access (OFDMA) system may experience a different carrier frequency offset (CFO). These uncorrected CFOs destroy the orthogonality among subcarriers, causing inter-carrier interference and multi-user interference, which degrade the system performance severely. In this paper, novel time-domain multi-user interference cancellation schemes for OFDMA uplink are proposed. They employ an architecture with multiple and numerical evaluations show that the proposed schemes achieve a significant performance gain compared to the conventional receiver and a reference frequency-domain multi-user interference cancellation scheme. In a particular scenario, a maximum CFO of up to 40% of the subcarrier spacing can be tolerated, and the CFO-free performance is maintained in the OFDMA uplink. The proposed schemes outperform the multi-user interference cancellation techniques for Orthogonal Frequency Division Multiple Access (OFDMA) available in literature with comparable or lower complexity.

KW - synchronization

KW - OFDMA

KW - uplink

KW - synchronization

KW - OFDMA

KW - uplink

KW - timing offset

KW - frequency offset

KW - multiuser

KW - interference

KW - cancellation

U2 - 10.1109/TWC.2014.021414.070718

DO - 10.1109/TWC.2014.021414.070718

M3 - Journal article

SN - 1536-1276

JO - IEEE Transactions on Wireless Communications

JF - IEEE Transactions on Wireless Communications

ER -

Multi-user interference cancellation schemes for carrier frequency offset compensation in uplink OFDMA

Abstract

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