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On the Energy Detection of Unknown Signals Over Fading ChannelsAbstract—This letter addresses the problem of energy detection of an unknown signal over a multipath channel. It starts with the no-diversity case, and presents some alternative closed-fo
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Comparison of log normal shadowing and coding effects in a diversity combining DS/CDMA Cellular system - report-Comparison of log normal shadowing and coding effects in a diversity combining DS/CDMA Cellular system- report
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This a paper from Mr.Raulef, it is study about combining transmit diversity for multicarrier system-This is a paper from Mr.Raulef, it is study about combining transmit diversity for multicarrier system
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研究相关瑞利衰落信道上MIMO系统中组合发射机选择合并(SC)／4t-收机最大比合并(MRC)的天线分集系统性能。使用矩生成函数方法，推导相关瑞利衰落信道上采用组合SC／MRC天线分集和相干检测的M 进制相移键控(MPSK)，M进制正交幅度调制(MQAM)，M 进制脉冲幅度调制(MPAM)等几种M 进制数字调制方式的误符号率精确表达式。数值计算结果阐明相关性和天线阵结构对采用组合SC／MRC天线分集的几种M 进制数字调制方式的平均误符号率性能的影响。-Research related to Ra
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无线通信中一个简单的发送分集，介绍了Alamouti空时块码！-This paper presents a simple two-branch transmit
diversity scheme. Using two transmit antennas and one
receive antenna the scheme provides the same diversity order
as maximal-ratio receiver combining (MRRC) with
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This thesis presents simulation data on array operation in wideband communication systems.
It is shown that array structures with closer inter-element spacing outperform structures with
much larger inter-element spacing. It is also shown that cir
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thesis to implement all compulsory features of
the WiMAX OFDM physical layer specified in IEEE 802.16-2004 in Matlab
Simulink. Optional space-time coding for more than one transmit antenna is
implemented to allow performance investigations in v
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Performance Analysis of Combined Transmit Selection Diversity and Receive
Generalized Selection Combining in Rayleigh Fading Channels
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Diversity combining is specifically
targeted to counteract small scale fading. We will therefore use slow, flat, Rayleigh fading as our
model for the signal fluctuation. It must be emphasized that the Rayleigh model is the easiest and
most trac
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MIMO with multiuser diversity combining technique
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并行遗传算法将并行计算机的高速并行性和遗传算法固有的并行性相结合，极大地提升了遗传算法的求解速度和质量。在主从式0细粒度和粗粒度这三类遗传算法并行化模型中，粗粒度模型以其较小的通讯开销和对种群多样化，获得了最广泛的应用。本文概括了基于模式定理和有限状态马尔可夫链的遗传算法理论，总结了前人在粗粒度模型下开展的理论分析和实践应用，并指出并行遗传算法的研究将向异步化，理论化和模型化的方向发展-而有限状态马尔可夫链是构建并行遗传算法可执行模型的有力工具。-Parallel genetic algorit
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This paper presents a simple two-branch transmit
diversity scheme. Using two transmit antennas and one
receive antenna the scheme provides the same diversity order
as maximal-ratio receiver combining (MRRC) with one transmit
antenna, and two
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An ad-hoc network with a sender, a destination and a third station act-
ing as a relay is analysed. The channels are modelled containing thermal
noise, Rayleigh fading and path loss. Di® erent combining methods and di-
versity protocols are
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Abstract—Selection combining cascaded with maximum-ratio
combining (SC/MRC), which is particularly useful when site
diversity is available, combined with low-density parity-check
(LDPC) codes is able to combat the effects of fading. The biterro
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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
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