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MIMO 系统仿真，对时变信道的自适应调制-erq.m : function for ERQ algorithm in MIMO systems
space_wf.m : function for spatial domain power waterfilling
st_wf.m : function for spatial and temporal domain waterfilling
MIMO_rate.m : Plot spectral efficiency vs SNR f
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VBLAST系统仿真，针对时变信道的自适应调制算法-erq.m : function for simulating ERQ algorithm with Gap parameter
sqpc_g.m : function for simulating SQPC algorithm with Gap parameter
sr_g.m : function for simulating SR algorithm with Gap parameter
vblast_rate.m : fun
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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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摘要本文首先分析了自适应调制的原理, 它以频谱效率最高为准则, 在恒定功率约束条件下对接收信噪
比优化来选择不同调制阶数。然后引入时变多径信道模型, 通过仿真给出了自适应在此信道条件下的性能, 并分析
了信道估计误差对其性能的影响。
关键词自适应调制, 调制, 时变信道-Abstract This paper first analyzes the principle of adaptive modulation, spectral efficiency it up to standa
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16QAM因其高频谱利用率而被第三代移动通信增强型技术HSDPA采用。由于Turbo译码需要软信息输入，因此，解调输出需要计算比特软信息（LLR）。本文分析了LLR理论算法并在此基础上导出了简化算法。-16QAM its high spectral efficiency have been enhanced third-generation mobile communication technology HSDPA use. Turbo decoding requires soft inform
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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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在不同的信道条件下计算第一类优先级数据平均频谱效率的MATLAB函数-In different channel conditions, the first class priority data calculated the average spectral efficiency of the MATLAB function
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or future wireless communications systems, parameters like high transmission data rate, spectral efficiency, and reliability are extremely necessary. In a multipath wireless channel, deploying multiple antennas at both the transmitter and receiver he
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】UWB 以其高速率、高频谱利用率、低成本、低功耗和应用范围广等一系列优点受到业界前所未有的关注。正是
由于其高性能、低成本的无线数据通信能力，成为实现无限个人局域网的富有竞争力的技术之一。在介绍超宽带技术(UWB)基
本特点和原理的基础上，重点讨论了该技术在家庭网络中应用的优势和实现，并介绍了超宽带技术在其他方面的最新应用。-】 UWB with its high-speed, high spectral efficiency, low cost, low power and wide
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Iterative receiver techniques, multiple-input – multiple-output (MIMO) processing, and
orthogonal frequency division multiplexing (OFDM) are amongst the key physical layer
technologies when aiming at higher spectral efficiency for a wireless comm
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The ten-year-old turbo codes are entering into service-ABSTRACT
In the matter of channel coding and spectral
efficiency, up to the invention of turbo codes, 3
dB or more stood between what the theory
promised and what real systems were able t
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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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This M Code simulate the effects of clipping and filtering on PAPR reduction in OFDM-based wireless standard.Also the performance of BER versus SNR of original OFDM signals with PAPR reduction based on clipping and filtering schemes over AWGN channel
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This is a complete simulation for illustrating MSK & GMSK modulation techniques spectral Efficiency.-This is a complete simulation for illustrating MSK & GMSK modulation techniques spectral Efficiency.
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Spectral Efficiency of CDMA Cellular Networks
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IN THIS NOVEL AN ALGORITHEM IS DESCRIBED TO INCREASE THE SPECTRAL EFFICIENCY OF OCDMA SYSTEMS
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数字调制QPSK和MSK的性能对比，通过计算和比较频谱利用率、功率谱的滚降、误码性能等-QPSK and MSK digital modulation performance comparison, by calculating and comparing spectral efficiency, power spectrum roll-off, error performance, etc.
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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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