Description: Multi user mimo for increase the channel capacity for multiple user that want to access the same channel at same time Platform: |
Size: 4096 |
Author:Helm |
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Description: mimo系统容量仿真程序 多输入多输出(MIMO)技术是近年来无线通信领域的一项重大突破，它在通信的发射端和接收端均使用多根天线，可以在不增加信号发射功率和带宽的情况下大幅度提高通信系统的信道容量和传输可靠性，成为下一代无线通信的关键技术之一-mimo system capacity simulation program Multiple Input Multiple Output (MIMO) wireless communication technology in recent years a major breakthrough, it is communication both the transmitter and the receiver using multiple antennas, without increasing the signal transmission power and bandwidth communication system with a substantial increase the channel capacity and transmission reliability, the next generation of one of the key technology of wireless communications Platform: |
Size: 61440 |
Author:劳振宇 |
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Description: 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) communication architecture, as compared with conventional
techniques, has even higher spectral efficiency, and MIMO technique could greatly improve channel capacity and
performance of the system without any increase of transmitting power and bandwidth. By uniform angular distribution
and the correlation matrix, the MIMO channel capacity in correlated channel is investigated. Numerical simulation
is performed with MATLAB, thus to verify the proposed formula. Simulation result indicates that, for this model,
the increase of correlation means the reduction of signal-to-noise ratio (SNR), and the circular receive antenna
array radius or angle spread is the dominating factor for channel capacity. Platform: |
Size: 805888 |
Author:蜡笔 |
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Description: 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 systems offer practically
limited potential to increase the spectral efficiency. MIMO (Multiple Input
Multiple Output) Systems utilize space-multiplex by using antenna arrays to
enhance the efficiency in the used bandwidth. Platform: |
Size: 363520 |
Author:raida |
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Description: 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 occupying more
bandwidth，has become one of the key techniques for next-generation mobile
communication system． Platform: |
Size: 2777088 |
Author:蜡笔 |
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Description: MIMO．OFDM系统的子载波、功率和比特分配
MIMO技术能不增加系统带宽却提高系统容量和频谱利用率-The MIMO.OFDM system subcarrier, bit and power allocation
MIMO technology can not increase the bandwidth of the system can improve the system capacity and spectrum efficiency Platform: |
Size: 7168 |
Author:sunyidu |
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Description: MIMO系统容量仿真程序,用来仿真不同天线数目情况下增减天线数目对信道容量的影响-MIMO system capacity simulation program used to increase or decrease the number of antenna simulation under different conditions affect the number of antennas on the channel capacity Platform: |
Size: 56320 |
Author:原博 |
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Description: 与在空间域上通过适当信号处理来分离多用户相比，下行多用户多输入多输出（MU-MIMO）传输技术因其显著增加系统容量的潜力近来已经得到广泛关注。令人遗憾的是，这些技术需要准确的信道状态信息保证其正常运行。然而在实践中，由于在FDD系统中反馈信道的有限容量导致精确的CSIT是难以获得的。本文研究的系统采用MU-MIMO下行链路传输中的分解有限反馈。特别是，支持能够处理用户间干扰的方案的必不可少的信息是确定的，根据把残余的用户间干扰功率最大限度地减小来设计最佳的码本。模拟结果表明，一般的有限反馈对通过MU-MIMO分解变速器获得的交互信号有显著的影响。-Abstract — Downlink multi-user multiple-input multiple-output
(MU-MIMO) transmission techniques have gained much attention
recently because of their potential to significantly increase system
capacity compared to single-user transmission by separating
multiple users in the space domain through appropriate signal
processing. Unfortunately, these techniques require accurate
channel state information at the transmitter (CSIT) for their
proper operation. In practice however perfect CSIT is hard to
obtain due to capacity-limited feedback channel in FDD systems
for example. In this paper we investigate systems employing
MU-MIMO decomposition transmission in the downlink with
limited feedback. In particular, the essential information that
enables the scheme to deal with inter-user interference is
identified and the optimal codebook design in terms of minimizing
the residual inter-user interference power is derived. Simulation
results show that in general limited feedback has a Platform: |
Size: 1024 |
Author:何静 |
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Description: 利用MIMO技术可以提高信道的容量，同时也可以提高信道的可靠性，降低误码率。-MIMO technology can improve the use of the channel capacity, but also can improve the reliability of the channel, to reduce the error rate. Application of MIMO technology, the space becomes a resource that can be used to improve performance and the ability to increase the coverage of the wireless system. Platform: |
Size: 14336 |
Author:刘朝选 |
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Description: 实现MIMO检测
MIMO(Multiple-Input Multiple-Output)技术指在发射端和接收端分别使用多个发射天线和接收天线，使信号通过发射端与接收端的多个天线传送和接收，从而改善通信质量。它能充分利用空间资源，通过多个天线实现多发多收，在不增加频谱资源和天线发射功率的情况下，可以成倍的提高系统信道容量，显示出明显的优势、被视为下一代移动通信的核心技术(The technology refers to transmitting and receiving antennas at the transmitter and receiver respectively to transmit and receive signals through the transmitter and the receiving terminal, thus improving the quality of communication. It can make full use of space resources, through multiple antennas to achieve multiple, multi receive, without increasing spectrum resources and antenna transmission power, it can exponentially increase the system channel capacity, showing obvious advantages) Platform: |
Size: 1024 |
Author:孤独一枝
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Description: Although MIMO techniques are significantly ‘younger’ than OFDM, they also reached a
state of maturity and hence the family of recent wireless standards includes the optional employment of
MIMO techniques, which motivates the joint study of OFDM and MIMO techniques in this volume.
The research of MIMO arrangements was motivated by the observation that the MIMO capacity
increases linearly with the number of transmit antennas, provided that the number of receive antennas
is equal to the number of transmit antennas. With the further proviso that the total transmit power is
increased proportionately to the number of transmit antennas, a linear capacity increase is achieved upon
increasing the transmit power. This is beneficial since, according to the classic Shannon–Hartley law,
the achievable channel capacity increases only logarithmically with the transmit power. Thus MIMOOFDM
may be considered a ‘green’ transceiver solution. Platform: |
Size: 7897741 |
Author:mustafa1970 |
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Search - increase mimo capacity