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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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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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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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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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THIS DOCUMENT CONTAIN ALGORITHEM TO IMPROVE THE SPECTRAL EFFICIENCY OF OCDMA SYSTEMS, AND VARIUOS IEEE RESEARCH PAPERS ON OCDMA IN GENERAL
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一个计算mcs-8下的小区平均频谱效率的小程序-A calculating mcs-8 under the average spectral efficiency of small residential program
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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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Higher spectral efficiency is achieved for larger number of users in a cell due to the multiuser diversity
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多输入多输出(MIMO)通信系统相比其他的通信系统具有更高的频谱效率，在不增加发射功率以及信号带宽的
情况下，MIMO 技术可以有效地提高系统信道容量及其性能。利用均匀角能量分布以及相关矩阵，分析了相关信道下的MIMO
系统信道容量，得出了系统信道容量的通用公式，并利用MATLAB 进行仿真。仿真结果表明，相关性的增加意味着信噪比的减
小，圆形接收天线阵列半径与角度扩展是决定MIMO 系统信道容量的主要因素。-Multiple-input multiple output (MIMO)
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In the last few years wireless services have become more and more
important. Likewise the demand for higher network capacity and
performance has been increased. Several options like higher bandwidth,
optimized modulation or even code-multiplex
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多输入多输／皇(MIMO，Multiple Input Multiple Output)技术可以在不增加系统
带宽的情况下成倍地提高系统容量和频谱利用率，已成为下一代移动通信系统的
关键技术之一。-Multiple Input Multiply Output(MIMO)，which can dramatically increase the
channel capacity and spectral efficiency for a wireless system without o
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无线MESH网络是近年被高度重视和快速发展的新型网络技术。该网络是面向基于IP接入的新型无线移动通信技术，适合于区域环境覆盖和宽带高速无线接入。无线Mesh网络基于呈网状分布的众多无线接入点间的相互合作和协同，具有宽带高速和高频谱效率的优势，具有动态自组织、自配置、自维护等突出特点。-The wireless mesh network in recent years has been attached great importance to the rapid development of ne
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