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

Huan Cong Nguyen, Elisabeth De Carvalho, Ramjee Prasad

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

20 Citationer (Scopus)
473 Downloads (Pure)

Resumé


OriginalsprogEngelsk
TidsskriftIEEE Transactions on Wireless Communications
ISSN1536-1276
DOI
StatusUdgivet - mar. 2014

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Carrier Frequency Offset
Interference Cancellation
Frequency division multiple access
Orthogonal Frequency Division multiple Access (OFDMA)
Uplink
Intercarrier Interference
Orthogonality
Low Complexity
Spacing
Frequency Domain
Time Domain
System Performance
Receiver
Interference
Scenarios
Compensation and Redress
Evaluation

Emneord

  • synchronization
  • OFDMA
  • uplink

Citer dette

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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 = "3",
doi = "10.1109/TWC.2014.021414.070718",
language = "English",
journal = "I E E E Transactions on Wireless Communications",
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publisher = "IEEE",

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Multi-user interference cancellation schemes for carrier frequency offset compensation in uplink OFDMA. / Nguyen, Huan Cong; De Carvalho, Elisabeth; Prasad, Ramjee.

I: IEEE Transactions on Wireless Communications, 03.2014.

Publikation: Bidrag til tidsskriftTidsskriftartikelForskningpeer review

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

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JO - I E E E Transactions on Wireless Communications

JF - I E E E Transactions on Wireless Communications

SN - 1536-1276

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