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Description: 信号经过两个独立的信道传输，两个信道的信道复增益分别为 和 。 是独立同分布的复高斯随机变量，实部虚部独立、均值为0，实部虚部的方差都是1。采用某分集技术后输出的信噪比为 ，其中 是常数， 是在 之间均匀分布的随机变量。请就不同的 、 ，用仿真的方法画出 的累积分布函数。-signal after two independent Channel Tunnel, Channel 2 Channel Minute respectively, and gain. Independence is the same complex Gaussian distribution of random variables, is the imaginary part of the Department of independence, mean 0 and the real part of the imaginary part is a variance. Using a diversity of the output signal-to-noise, which is constant, is the uniform distribution between random variables. Please different, and simulation methods paint the cumulative distribution function.
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Size: 1024 |
Author: 昭 |
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Description: Power Allocationin a Transmit Diversity System with Mean Channel Gain Information
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Size: 415744 |
Author: zy |
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Description: 包括八天线准正交空时码的编码和解码函数，满速率部分分集增益，解码包括部分行的解码-Including eight antenna quasi-orthogonal space-time codes of encoding and decoding functions, full diversity gain some speed, decoding including some line decoder
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Size: 1024 |
Author: 谷雨 |
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Description: 完成对发送数据符号的空时编码 实现空间复用和分集增益-Send data to complete the symbol space-time coding and spatial multiplexing diversity gain
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Size: 2048 |
Author: 林琳 |
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Description: 通过MATLAB软件；通过仿真得出性能曲线；从而比较bpsk的性能-The bit-error rate (BER) of binary phase-shift keying
in Rayleigh fading, using the Alamouti transmission scheme and
receiver selection diversity in the presence of channel-estimation
error, is studied. Closed-form expressions for the BER of log-likelihood
ratio selection, signal-to-noise ratio (SNR) selection, switchand-
stay combining selection, and maximum ratio combining are
derived in terms of the SNR and the cross-correlation coefficient
of the channel gain and its corrupted estimate. Two new selection
schemes, space–time sum-of-squares combining selection diversity
and space–time sum-of-magnitudes selection diversity, are
proposed and proven to provide almost the same performance as
SNR selection, but with much simpler implementations. The effects
of channel-
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Size: 340992 |
Author: 刘小洋 |
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Description: log normal shadowing model
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Size: 362496 |
Author: Priya |
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Description: 这个程序是三种分集合并方式的比较，选择合并，等增益合并，最大比值合并-This program gives the comparison of improvements offered by the 3 combining techniques, namely Selection Diversity, Equal Gain and Maximal Ratio.
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Size: 1024 |
Author: 高肉 |
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Description: 对比瑞利信道分集增益后与高斯信道的性能，误码率曲线-Rayleigh Road, diversity gain compared with the Gaussian channel, after the performance, bit error rate curve
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Size: 10240 |
Author: 欣欣 |
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Description: helps in maximal ratio combining,equal gain combining,snr improvement,select diversity
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Size: 4096 |
Author: cart |
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Description: 16qam
换句话说,信号可能仍然是
探测到,但以较低的质量。这是通常所说
对软失败。幸运的是,新的传-16qam simulink ser mimo
one of the receive chains fail, and the other receive
chain is operational, then the performance loss is on the order
of the diversity gain. In other words, the signal may still be
detected, but with inferior quality. This is commonly referred
to as soft failure. Fortunately, the new transmit diversity
scheme provides the same soft failure. To
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Size: 234496 |
Author: 丁蓉 |
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Description: 换句话说,信号可能仍然是
探测到,但以较低的质量。这是通常所说
对软失败。幸运的是,新的传输的多样性
方案提供了相同软失败。对-one of the receive chains fail, and the other receive
chain is operational, then the performance loss is on the order
of the diversity gain. In other words, the signal may still be
detected, but with inferior quality. This is commonly referred
to as soft failure. Fortunately, the new transmit diversity
scheme provides the same soft failure. To
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Size: 41984 |
Author: 丁蓉 |
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Description: 换句话说,信号可能仍然是
探测到,但以较低的质量。这是通常所说
对软失败。幸运的是,新的传输的多样性
方案提供了相同软失败。对-one of the receive chains fail, and the other receive
chain is operational, then the performance loss is on the order
of the diversity gain. In other words, the signal may still be
detected, but with inferior quality. This is commonly referred
to as soft failure. Fortunately, the new transmit diversity
scheme provides the same soft failure. To
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Size: 5120 |
Author: 丁蓉 |
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Description: 实现空是分组编码Alamouti,真是一种正交的空时分组码，可实现空间分集增益-Block coding to achieve space is Alamouti, is really an orthogonal space-time block codes, spatial diversity gain can be achieved
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Size: 1024 |
Author: xiaoyali |
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Description: SC-FDE程序研究了IEEE802. 16a宽带无线接入系统的单载波频域均衡( SC - FDE)方案,建立了完整的802. 16a单载波频域均衡系统仿真平台,研究了SC - FDE系统的频域均衡、编码和分集增益。-SC-FDE simulation,An integrated simulation p latform of 802. 16a SC- FDE is estab2
lished for investigating the frequency domain equalization, coding and diversity gain. The simulation re2
sults show that SC- FDE system combined with decision feedback equalization (DFE) ,
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Size: 1024 |
Author: zouqifeng |
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Description: The cooperative communication technology proposed
in recent years enables network nodes to share their
antennas to achieve diversity gain. In this paper, an efficient
variation scheme on opportunistic cooperation is proposed by
using an outage criterion, in which the cooperation mode will
be adopted only when the channel from source to relay does
not occur outage event.
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Size: 463872 |
Author: 陈鹏 |
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Description: 该程序是使用Matlab仿真协同通信的DF（解码转发）基本性能，基本模型S-R-D三个节点，接收端使用MRC（最大比合并）。固定DF由于SR信道的错误，其性能受到限制，在大SNR情况下不能获得有效分集。而当SR距离足够近的时候，可能获得一定的分集增益。-The program is a cooperative communication using Matlab simulation DF (decode forwarding) basic performance, the basic model of the SRD three nodes, the receiver uses the MRC (maximum ratio combining). Fixed DF error of the SR channel, its performance is limited, can not obtain a valid diversity in the large SNR case. When the SR close enough, you may get some diversity gain.
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Size: 10240 |
Author: 梁家明 |
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Description: 该程序是使用Matlab仿真协同通信的DF（解码转发）基本性能，基本模型S-R-D三个节点，接收端使用MRC（最大比合并）。固定DF由于SR信道的错误，其性能受到限制，在大SNR情况下不能获得有效分集。而当SR距离足够近的时候，可能获得一定的分集增益-The program is a cooperative communication using Matlab simulation DF (decode forwarding) basic performance, the basic model of the SRD three nodes, the receiver uses the MRC (maximum ratio combining). Fixed DF error of the SR channel, its performance is limited, can not obtain a valid diversity in the large SNR case. When the SR close enough, you may get a certain amount of diversity gain
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Size: 1024 |
Author: 高华 |
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Description: 基于16QAM调制的空时编码，通过仿真可以实现空间分集增益-16QAM modulation-based space-time coding, spatial diversity gain can be achieved through simulation
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Size: 1024 |
Author: 李菊芳 |
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Description: 空时编码的几种天线比较，实现空间的分集增益，-Several antenna space-time coding, spatial diversity gain,
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Size: 10240 |
Author: 李菊芳 |
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Description: 分层空时编码技术是提高无线信道传输速率和容量的一种非常有效的方法。在无需提高信号发射功率和额外增加带宽的情况下就可以大幅度的提高系统容量。但是，分层空时编码无法获得最大分集增益，所以接收端在恢复信号时选用的译码算法对系统性能至关重要。-Layered space-time coding technology is to improve the wireless channel transmission rate and capacity of a very effective method. Without having to increase the signal transmission power and extra bandwidth can significantly improve the system capacity. Layered space-time coding, however, could not obtain maximum diversity gain, so the receiver choose when to restore signal decoding algorithm is very important to system performance.
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Size: 1024 |
Author: 熊晓玲 |
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