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- Platform: |
Size: 340992 |
Author:刘小洋 |
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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. Platform: |
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 Platform: |
Size: 1024 |
Author:高华 |
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Description: SILABS新推出SI4463完整DEMO板原理图、PCB图、DEMO程序下载。传输距离1000~2000米
SILABS新推出EZradioPRO系列RFIC:SI4432,适合长远距离的无线数据传输应用.其发射功率+20dbm,接收灵敏度-116dbm,通讯距离2000米
SI4463特点
频率范围= 119–1050 MHz
接收灵敏度 = –126 dBm
调频模式
(G)FSK and 4(G)FSK
OOK and ASK
最大输出功率
+20 dBm (Si4464/63)
+16 dBm (Si4461)
+13 dBm (Si4460)
PA支持 +27 dBm
低功耗
10/13 mA RX
19 mA TX at +10 dBm (Si4460)
待机模式
30 nA shutdown, 50 nA standby
波特率= 0.123 kbps to 1Mbps
快速唤醒转换时间
支持电压= 1.8 to 3.6 V
Excellent selectivity performance
60 dB adjacent channel
> 73 dB blocking at 1 MHz
天线多样性和T / R开关控制
高度可配置的包处理程序
TX and RX 64 byte FIFOs
自动频选(AFC)
自动增益控制 (AGC)
低成本
Low Battery Detector
温度传感器
20-pin QFN 封装
IEEE 802.15.4g compliant
FCC Part 90 Mask D
-SILABS new EZradioPRO series RFICs: SI4432, suitable for long-term distance wireless data transmission applications. Emission power+20dbm, receiver sensitivity-116dbm 2000 meters communication distance the SI4463 characteristics of the frequency range = 119-1050 MHz Receiving Sensitivity =-126 dBm FM mode ( G) FSK and 4 (G) FSK OOK and ASK the maximum output power+20 dBm (Si4464/63)+16 dBm, (Si4461)+13 dBm, (Si4460) PA to support+27 dBm low-power 10/13 mA RX 19 mA TX at+10 dBm (Si4460) 30 nA of the shutdown of the standby mode, 50 nA, the standby baud rate = 0.123 kbps to 1Mbps fast wake-up voltage conversion time support = 1.8 to 3.6 V Excellent selectivity Performance 60 dB adjacent channel> 73 dB, the blocking at 1 MHz antenna diversity and T/R switch control highly configurable packet handler TX and RX 64 byte FIFOs automatic frequency-selective (AFC) Automatic Gain Control (AGC) low-cost Low Battery Detector temperature sensor 20-pin QFN package IEEE 802.15.4g compliant FCC Par Platform: |
Size: 2699264 |
Author:王超 |
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Description: 本程序仿真了AWGN信道下，采用DS扩频对bpsk信号的影响，扩频码采用walsh码，扩频因子16；
接收端进行rake接收，然后分集合并，比较了三种分集方式对误码率的影响
从图像可以看出在扩频因子较高的情况下，最大比值合并与等增益合并性能相近-This program simulates the AWGN channel, using DS spread spectrum signal for bpsk influence spreading code using walsh code spreading factor 16
Rake receiver receiving end, and diversity combining, diversity compares three methods on the bit error rate of
As can be seen from the image in the case of higher spreading factor, the maximum ratio combining and equal gain combining similar performance Platform: |
Size: 1024 |
Author:liangzhongfa |
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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.
Platform: |
Size: 1024 |
Author:熊晓玲 |
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Description: 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。-Matlab simulation program using cooperative communication DF (decode forwarding) basic performance, basic model SRD three nodes, the receiver using MRC (maximum ratio combining). Because of the fixed DF SR channel errors, its performance is limited, under the circumstances could not obtain effective SNR diversity. When SR close enough, I could get some diversity gain. Platform: |
Size: 2752512 |
Author:史魁魁 |
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Description: 仿真2×1瑞利信道，分别考虑三种接收分集技术：最大比合并、等增益合并、选择性合并，并给出误码率比较。-In a one transmitting antenna and two receiving antenna collocate,calculate the bits error rates of the maximum ratio combining,equal gain combining ,selective combining and SISO system Platform: |
Size: 2048 |
Author:黄晓宇 |
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Description: 基于Matlab的MIMO通信系统仿真。MIMO：发送端和接收端同时使用多天线来抑制信道衰落，从而大幅度地提高信道容量、抗衰落性能和频谱利用率。基本要求。2*2 STBC的实现关于分集增益的分析
弹性要求与一发多收系统的比较（最大比合并）：分集增益、信噪比损失多个天线（>2）STBC实现（例如4*4）-Matlab simulation of the MIMO communication system. MIMO: sending and receiving ends simultaneously using multiple antennas to suppress channel fading, thereby greatly improve the channel capacity, resistance to fading and spectrum utilization. Basic requirements. 2* 2 STBC achieve diversity gain analysis of
Flexible system requirements and got overcharged comparison (maximum ratio combining): diversity gain, SNR loss multiple antennas (> 2) STBC achieve (for example, 4* 4)...
Platform: |
Size: 3072 |
Author:syq |
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Description: Simulate a Matlab Program for Alamouti Coding. It is a complex space-time diversity technique that can be used in 2x1 MISO mode or in a 2x2 MIMO mode. The Alamouti block code is the only complex block code that has a data rate of 1 while achieving maximum diversity gain. Platform: |
Size: 1024 |
Author:ammu |
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Description: 最大似然译码算法在Alamouti方案中的应用。理论上推导出发射天线数为2接收天线为的Alamouti方案与发射天线为1接收天线为2的最大比合并（MRC）接收分集的分集增益相同。并通过Matlab对系统进行了仿真，验证了理论分析的正确性。-Maximum likelihood decoding algorithm in Alamouti Scheme. Theoretically antenna number 2 to the receiving antenna and transmitting antenna Alamouti scheme as a receiving antenna 2 is maximum ratio combining (MRC) diversity reception diversity gain of the same. And the system by Matlab simulation to verify the theoretical analysis. Platform: |
Size: 4096 |
Author:王琛 |
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Description: （可用）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-(Available) co-communication DF (decode forwarding) basic performance, the basic model S-R-D three nodes, the receiver uses MRC (maximum ratio merge). Fixed DF due to the SR channel error, its performance is limited, in the case of large SNR can not get effective diversity. And when the SR distance is close enough, it is possible to obtain a certain diversity gain Platform: |
Size: 2886656 |
Author:胡江川 |
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Description: CDMA中的分集接收误码率比较，包括最大比合并，等增益合并，选择式合并(Diversity reception error rate in CDMA, including maximum ratio combining, equal gain combining, selective combining) Platform: |
Size: 1024 |
Author:秋刀鱼的夏天
|
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Search - Maximum Diversity Gain