Cooperative resource allocation algorithms in cellular orthogonal frequency-division multiple access systems for target signal-to-interference plus noise ratio provision

This study addresses subcarrier allocation and power distribution in a sectorised two-cell downlink orthogonal frequency-division multiple access system impaired by multicell interference. The objective is to maximise the sum spectral efficiency in a way that the signal-to-interference plus noise ra...

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Vydané v:IET communications Ročník 8; číslo 9; s. 1488 - 1498
Hlavní autori: Hosseini Andargoli, Seyed Mehdi, Mohamed-pour, Kamal
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Stevenage The Institution of Engineering and Technology 01.06.2014
John Wiley & Sons, Inc
Predmet:
Algorithms
base station
Cellular
cellular orthogonal frequency‐division multiple access systems
cellular radio
complexity reduction
cooperative communication
cooperative resource allocation algorithms
data substream
frequency division multiple access
intercell interference
Interference
interference reduction
multicell interference
Multiple access
OFDM modulation
power control
power distribution
Reduction
Resource allocation
sectorised two‐cell downlink OFDMA system
signal denoising
SINR
Spectra
subcarrier allocation separation
Subcarriers
sum spectral efflciency
target signal‐to‐interference plus noise ratio provision
telecommunication control
cellular orthogonal frequency-division multiple access systems
frequency division multiple access
telecommunication control
multicell interference
sectorised two-cell downlink OFDMA system
cooperative communication
signal denoising
resource allocation
interference reduction
intercell interference
sum spectral efflciency
data substream
complexity reduction
power distribution
cooperative resource allocation algorithms
OFDM modulation
power control
subcarrier allocation separation
SINR
base station
target signal-to-interference plus noise ratio provision
cellular radio
ISSN:1751-8628, 1751-8636
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Popis
Shrnutí:This study addresses subcarrier allocation and power distribution in a sectorised two-cell downlink orthogonal frequency-division multiple access system impaired by multicell interference. The objective is to maximise the sum spectral efficiency in a way that the signal-to-interference plus noise ratio (SINR) of the transmitted data substream on each subcarrier meets a target SINR. In cellular systems because of intercell interference, it may not be possible to guarantee the target SINR in all cells simultaneously; therefore the authors have suggested a cooperative resource allocation algorithm which tries to provide the target SINR per subcarrier in all cells through cooperation in the interference control. For a considered subcarrier, if achieving the target SINR is impossible by the interference reduction, one base station avoids transmission on the considered subcarrier so that another base station can meet the target SINR. For complexity reduction, a simplified resource allocation algorithm is then provided based on the separation of subcarrier allocation and power control. Simulation results show that the proposed algorithms not only guarantee the target SINR but achieve more sum spectral efficiency than benchmark algorithms in many practical situations.
Bibliografia:SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ObjectType-Article-2
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ISSN:1751-8628
1751-8636
DOI:10.1049/iet-com.2013.0028