Channel Frequency Response for OFDM System
Two-stage Channel Frequency Response Estimation in OFDM Systems
... two-stage channel frequency response estimation algorithm in communication systems with OFDM ...previous OFDM symbols are used for channel ...and frequency directions. ...
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Optimum Frequency-Domain Partial Response Encoding in OFDM System
... Optimum Frequency-Domain Partial Response Encoding in OFDM System Hua Zhang and Ye (Geoffrey) Li, Senior Member, IEEE Abstract—Time variance of wireless channels destroys the or- thogonality ...
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Frequency Synchronization in OFDM System
... accurate frequency synchronization method using the zadoff-chu (ZC) constant envelop preamble is analyzed, and a new preamble weighted by pseudo-noise sequence is used for orthogonal frequency division ...
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Bit Error Rate Analysis for an OFDM System with Channel Estimation in a Nonlinear and Frequency Selective Fading Channel
... In this paper, we have presented closed-form BER expres- sions for OFDM with CE based on both TDM and FDM pilots in a nonlinear and frequency-selective fading channel. In our analysis the nonlinear ...
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Timing and Frequency Synchronization and Channel Estimation in OFDM-based Systems
... 3.4 Conclusion In this chpater, two novel timing metrics using n-th order statistics have been proposed and their performances have been assessed using different criteria such as class-separability, robustness to CFO, and ...
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MIMO OFDM Channel Estimation in the Presence of Carrier Frequency Offset
... the channel or- der L should be known in ...the channel order estimation is needed. Further- more, because channel order is variant in practice, the ma- trices X and P have to be reconstructed ...
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Time-Varying Frequency Fading Channel Tracking In OFDM-PLNC System, Using Kalman Filter
... the channel dispersion increases. The signal-to-noise ratio of the channel is considered to be 15 dB in this ...the channel is almost constant between tandem training ...the channel becomes ...
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Channel Estimation for OFDM IDMA Receivers System
... initial channel estimate In Section III three different pilot based algorithms were ...overall system performance is investigated, and ...the frequency correlation, ...
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A Combined Time and Frequency Domain Approach to Channel Estimation for SFBC MIMO OFDM Wireless Communication System
... to channel estimation for multiple input multiple output (MIMO) orthogonal frequency division multiplexing ...and frequency domain information in the received signal to estimate the ...the ...
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An iterative and joint estimation of SNR and frequency selective channel for OFDM systems
... the frequency selective transmission channel in OFDM ...the channel estimation. The channel estimation uses the Linear MMSE (LMMSE) method which requires the noise variance ...
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Compressive sensing based joint frequency offset and channel estimation for OFDM
... carrier frequency offset (CFO) and channel impulse response (CIR) for orthogonal frequency division multiplexing (OFDM) with pilot ...one OFDM training block and does not require ...
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Semiblind frequency-domain timing synchronization and channel estimation for OFDM systems
... and channel estimation algorithm based on unit vectors, and demonstrates that this algo- rithm is suitable for multipath fading channels with both LOS and NLOS ...the frequency- ...the channel ...
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Frequency Response Based Resource Allocation in OFDM Systems for Downlink
... on-line channel-adaptive scheduling schemes that essentially learn the underlying channel distribution on-the-fly [17] The resultant “opportunistic” schedulers, however, are mainly developed for single- ...
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Review on Channel Estimation in MIMO OFDM Wireless System
... through channel but sometimes there is interference due to addition of ...estimated channel, utilized the correlation of channel parameters at adjoining subcarriers to eradicate interference among ...
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Performance Analysis of an OFDM System for Different channel Models
... In wireless channels the phenomenon called ‘fading’ which is the variation of signal amplitude over frequency and time. The common source of signal degradation is fading which is characterized as a disturbance ...
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Collision Recovery for OFDM System over Wireless Channel
... Compared with other methods, the most important point is that our proposed method can recover both long and short packets from the collision, which can be utilized in ad hoc networks based on OFDM. For example, ...
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A REVIEW ON MIMO OFDM SYSTEM UNDER CHANNEL ESTIMATION
... .MIMO SYSTEM MODEL MIMO system model; generate OFDM with success the connection between all the carriers must be carefully controlled to take care of the orthogonally of the ...carriers. OFDM ...
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Performance of OFDM system for AWGN, Rayleigh and Rician Channel
... KEYWORDS: OFDM, AWGN channel, Rician channel, Rayleigh channel, ...transmission. OFDM one of them used for high rate transmission. OFDM system also utilized for modulation ...
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Two Channel Estimation Methods for MIMO-OFDM System
... communication system. The applications of the adaptive filters are channel equalization, noise cancellation, system identification and adaptive beam ...limited frequency selective time ...
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Channel Frequency Response Estimation for MIMO Systems with Frequency-Domain Equalization
... single-carrier frequency-domain equalization (SC-FDE), an effective technique to mitigate the distortion induced by long-spanning intersymbol interference has seen a surge of interest in the research ...the ...
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