Results 151 to 160 of about 22,554 (188)
Ad hoc bandwidth requests and power conservation in 5G wireless networks with tiny cells. [PDF]
Sci RepRajesh A +6 more
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A User Association and Resource Allocation Algorithm for UAV-Assisted Smart Grid. [PDF]
Sensors (Basel)Wei J +6 more
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Learning uplinks and downlinks transmissions in RF-charging IoT networks. [PDF]
Sci RepLi Y, Mu Y, Zhang G, Wang W.
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IEEE GLOBECOM 2007-2007 IEEE Global Telecommunications Conference, 2007
In current OFDMA systems, three major problems arise due to the large number of subcarriers, including high peak to average power ratio (PAPR), sensitivity to carrier frequency offset (CFO), and high complexity in user terminal. In this paper, based on an innovative concept of Layered FFT structure, we propose novel quadrature OFDMA system which can ...
Jian Andrew Zhang, Lin Luo, Zhenning Shi
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In current OFDMA systems, three major problems arise due to the large number of subcarriers, including high peak to average power ratio (PAPR), sensitivity to carrier frequency offset (CFO), and high complexity in user terminal. In this paper, based on an innovative concept of Layered FFT structure, we propose novel quadrature OFDMA system which can ...
Jian Andrew Zhang, Lin Luo, Zhenning Shi
openaire +3 more sources
2009 IEEE 20th International Symposium on Personal, Indoor and Mobile Radio Communications, 2009
To alleviate the high peak-to-average power ratio (PAPR), high complexity in user terminal and sensitivity to carrier frequency offset (CFO) problems in current OFDMA systems, a Quadrature OFDM (Q-OFDMA) system has been recently proposed in the single-input single-output environment.
null Lin Luo +2 more
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To alleviate the high peak-to-average power ratio (PAPR), high complexity in user terminal and sensitivity to carrier frequency offset (CFO) problems in current OFDMA systems, a Quadrature OFDM (Q-OFDMA) system has been recently proposed in the single-input single-output environment.
null Lin Luo +2 more
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ACM SIGCOMM Computer Communication Review, 2010
OFDMA will be the predominant technology for the air interface of broadband mobile wireless systems for the next decades. In recent years, OFDMA-based networks based on IEEE 802.16, and increasingly also on 3GPP LTE are rolled out for commercial use. This article gives an overview of the main challenges for the deployment and operation of state-of-the ...
Andreas Maeder, Nader Zein
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OFDMA will be the predominant technology for the air interface of broadband mobile wireless systems for the next decades. In recent years, OFDMA-based networks based on IEEE 802.16, and increasingly also on 3GPP LTE are rolled out for commercial use. This article gives an overview of the main challenges for the deployment and operation of state-of-the ...
Andreas Maeder, Nader Zein
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2010
Supported by the expert-level advice of pioneering researchers, Orthogonal Frequency Division Multiple Access Fundamentals and Applications provides a comprehensive and accessible introduction to the foundations and applications of one of the most promising access technologies for current and future wireless networks. It includes authoritative coverage
Wu, J, Xiao, Pei
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Supported by the expert-level advice of pioneering researchers, Orthogonal Frequency Division Multiple Access Fundamentals and Applications provides a comprehensive and accessible introduction to the foundations and applications of one of the most promising access technologies for current and future wireless networks. It includes authoritative coverage
Wu, J, Xiao, Pei
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An Analysis of Uplink OFDMA Optimality
IEEE Transactions on Wireless Communications, 2006Motivated by the increasing popularity of OFDMA, this paper studies the sum-rate optimality of OFDMA as an uplink multicarrier multiple-access scheme. We address the relationship between OFDMA and the optimal multicarrier multiple- access schemes.
null Hongxiang Li, null Hui Liu
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Opportunistic Spectrum Multichannel OFDMA
2007 IEEE International Conference on Communications, 2007Opportunistic Spectrum Access (OSA) is being seriously considered for the future spectrum needs. In this paper we propose a simple and effective multichannel multiple access technique for OSA networks. In our design users of an OSA network must contact the OSA Base Station to gain access to the radio resources.
P. Pawelczak, R. V. Prasad, R. Hekmat
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