block-Rayleigh-fading channel
Analysis of Rate One Quasi Orthogonal Space Time Block Coding over Rayleigh Fading Channel
... The channel is assumed to be quasi-static slow flat fading and the path gain from transmit antenna n to receive antenna m is denoted by α n m , ...The channel is qua- si-static so that the path gains ...
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Title: Improved Space Time Block Coding Diversity Technique for Rayleigh Fading Channel in Wireless Systems
... Alamouti system is one of the first space time coding schemes developed for the MIMO systems which take advantage out of the added diversity of the space direction. Therefore we do not need extra bandwidth or much time. ...
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Network Coding for Wireless Sensor Network Cluster over Rayleigh Fading Channel: Finite State Markov Chain
... wireless channel between any two nodes can be modelled as a Rayleigh block- fading channel, where the instantaneous SNR is assumed to be constant during a single packet transmission ...
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MIMO CONFIGURATION SCHEME WITH SPATIAL MULTIPLEXING AND QPSK MODULATION
... a channel without supplementary spectral ...Time Block Codes,Vertical Bell Labs Space - Time architecture (VBLAST) and Spatial Multiplexing ...in Rayleigh Fading ...
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OSTBC over Rayleigh Fading Using Rectangular QAM-TCM
... Combiner block combines the input signal (from all of the receive antennas) and the channel estimate signal to extract the soft information of the symbols that were encoded using an ...input channel ...
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Performance Improvement of OFDM Communication System in Rayleigh Fading Channel
... multipath fading. [1].The channel coding is used to improve the performance of un-coded OFDM ...as block code (as Reed Solomon) and convolutional code ...communication channel can be viewed as ...
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Adaptive Switching between Space Time and Space Frequency Block Coded OFDM Systems in Rayleigh Fading Channel
... WLANs. Block Coding is also possible over the two do- mains of antenna and frequency with Space-Frequency Block Coding (SFBC) in a Multi Carrier system, such as ...
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THE THROUGHPUT FOR MULTI HOP RELAY WIRELESS SENSOR NETWORKS BASED ON COOPERATIVE DIVERSITY
... large-scale fading. Small- scale fading is also known as Rayleigh Fading because if the multiple reflective paths are more in number and there is no line of sight signal component, the ...
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Adaptive Modulation Performance In Mimo-OSTBC Over Rayleigh Fading Channel
... time block coding MIMO-OS TBC over frequency selective Rayleigh fading channel using Bit Error Rate (BER) and spectral efficiency (S E) as performance ...to channel impairment that ...
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Adaptive Channel Estimation for Turbo Decoding
... adaptive channel filter with estimator (2) for Rayleigh fading channels is derived by assuming that the channel estimator (1) is available at first iteration of the decoding ...process. ...
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Performance Analysis of MIMO OFDM and MISO OFDM System based on STBC Code
... Time Block Code) over Rayleigh fading channel for MISO (Multiple Input Single Output) defined that the transmitter has multiple antennas at the same time the receiver has one antenna and MIMO ...
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Improved Channel Estimation Algorithm for OFDM System over Slow Fading Rayleigh Channel
... Basically, the IFFT block does the modulation of the mapped data onto the sub-carriers and known as the Modulation Block of OFDM. Similarly, at the receiver end the demodulation is carried out through FFT. ...
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Novel Semi blind Channel Estimation Schemes for Rayleigh Flat Fading MIMO Channels
... semi-blind channel estimation and proposed novel semi-blind channel estimation techniques for Rayleigh flat fading MIMO ...semi-blind channel estima- tion techniques have better BER ...
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Latency Considerations for Adaptive Modulation in an Interference free Slow Rayleigh Fading Channel
... age channel SNR is ...correlated channel results in only a few adjacent 'No Transmission' ...slow-fading channel, exhibiting a normalised Doppler frequency of ...average channel SNR, ...
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Improved Predictive Power Control of CDMA System in Rayleigh Fading Channel
... At the base station, the user recovers the transmitted symbol by correlating the received signal with the user spreading sequence. Due to non-zero crosscorrelation between spreading sequences of different users, the user ...
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MIMO-OFDM System in Rayleigh Fadding Channel Maninder Singh, Dr. Hardeep Singh Saini
... In order to be able to benefit from MIMO fully it is necessary to be able to utilise coding on the channels to separate the data from the different paths. This requires processing, but provides additional channel ...
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Performance Evaluation of 4G-LTE-SCFDMA Scheme under SUI and ITU Channel Models
... of channel equalization was done and it is found that the performance of the minimum mean square error MMSE method was better than the zero forcing ZF ...the channel types first the ITU channel was ...
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Location Based Spectrum Sensing For Rayleigh Fading
... in fading environment and correct threshold selection for the given ...the Rayleigh fading environment is used for the analysis and the probability of detection, probability of false alarms are ...
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An Improved Channel Estimation Algorithm Based on Cubic Convolution Interpolation for LOWPM System
... fast-fading channel, the performance of system is still not ...transmission, channel estimation technique is needed to combat noise of the ...improved channel estimation algorithm in which the ...
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An improved method of mimo ofdm channel estimation using chaotic pilot sequence
... multi-path fading and other channel impairments with the available power and ...the channel state information accurately and promptly for coherent detection of information symbols and channel ...
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