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Abstract—In this paper we present an initial performance
evaluation of the 3GPP UTRA Long Term Evolution (UTRA
LTE) uplink with baseline settings. The performance results
are obtained from a detailed UTRA LTE uplink link level
simulator suppo
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正交频分复用的研究，可以有效提高上行链路的频谱利用率。-Orthogonal frequency division multiplexing studies can effectively improve the uplink spectral efficiency.
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AF协作分集信道与M-QAM自适应调制技术的系统频谱效率分析-AF cooperative diversity channels with M-QAM adaptive modulation spectral efficiency of the system
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Reaching Higher data rate and spectral efficiency are among the challenges expected for 4G wireless systems. Combining OFDM modulation and multiple-input multipleoutput (MIMO) help for that. In this paper, performances of a WiMAX MISO-OFDM based syst
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This paper analyzed the spectral efficiency (total channel capacity per subband) of randomly-spread synchronous multicarrier code-division multiple-access (MCCDMA) channel subject to frequency-selective fading in the asymptotic regime of number of us
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IN THIS NOVEL AN ALGORITHEM IS DESCRIBED TO INCREASE THE SPECTRAL EFFICIENCY OF OCDMA SYSTEMS
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We compare the energy efficiency of some transmission
schemes in wireless sensor networks. By constraining
the system to end-to-end throughput requirements, we assume
that the nodes in multi-hop and cooperative schemes operate
at a spectral e
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智能天线技术是!"#$ "&’ 系统中的关键技术$其中下行波束赋形使下行波束对准移动用户$可靠地减小了干扰$提
高了系统的频谱利用率 -Smart antenna technology! " Key technologies $# $ & ' system which Downlink Beamforming downlink beam alignment mobile user $ reliably reduce interference $ improve the
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Orthogonal Frequency Division Multiplexing (OFDM) is a multicarrier modulation and multiplexing technique
proposed for 3G, 4G LTE-A systems to achieve higher data rates with better spectral efficiency at low latency. Time
varying nature of the wi
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As a multicarrier transmission system Orthogonal frequency division multiplexing (OFDM) has
been widely applied in wireless communication systems due to its numerous advantages like
robustness against multipath fading and delay, high data rate tr
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一种32Gb的多载波数字相干光链路，频谱效率高，设计简单实用-One kind of 32Gb multi-carrier digital coherent optical links, high spectral efficiency, the design is simple and practical
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Spectral Efficiency Analysis in OFDM and
OFDM/OQAM based Cognitive Radio Networks
The future wireless communication is expected to
be able to improve the efficiency of spectrum usage. To solve the challenge of spectrum shortage, an innovativ
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本文在介绍MIMO无线通信系统模型的基础上，通过对比分析几种常用空时编码方法，选定空时分组码对信号进行编码并建立瑞利衰落信道模型，通过对两发一收及两发两收系统的仿真，研究接收天线数对系统接收信号可靠性的影响。之后进一步扩展到不同发射矩阵条件下研究多发一收系统的频谱利用率及误符号率，分析不同天线数目，不同发射矩阵条件下空时正交分组码检测算法的性能。-This paper introduced the MIMO wireless communication system model, through
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变换域通信系统(TDCS)的发展历程,分析了其
独特的抗干扰方式,并揭示了TDCS具有极强的抗干扰能力、较高频谱利用率和低截获概率、低检测概率(LPI/LPD)特性的特点。-Transform domain communication system (TDCS) development process, analysis of its
The unique anti-jamming approach and reveals TDCS has a strong anti-jamming
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Quadrature ampliltude modulation has high spectral efficiency but is highly sensitive to power amplifier
nonlinearities. It is shown that an adaptive predistorter usig polynomial amplitude and phase
predistortion functions can be used to lineariz
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Frequency-Domain Detection of OQPSK Signals
with Quasi-Constant Envelope and High Spectral
Efficiency
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MU Diversity in Downlink Channels-when feedback cost overweigh spectral efficiency
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spectral efficiency distributed
MIMO
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Spectral Efficiency and Energy Efficiency of OFDM Systems Impact of Power Amplifiers and Countermeasures
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Spectral Efficiency in Large-Scale MIMO-OFDM Systems with Per-Antenna Power Cost
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