the PSAM (Pilot-Symbol Assisted Modulation) technique is the common channel estimation method for OFDM systems by using the time and frequency correlation of the channel. ESAE (Extended Symbol Aided Estimation) method...
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ISBN:
(纸本)0780384075
the PSAM (Pilot-Symbol Assisted Modulation) technique is the common channel estimation method for OFDM systems by using the time and frequency correlation of the channel. ESAE (Extended Symbol Aided Estimation) method has more robust feature in fast fading channel. But ESAE has an unstable property in a high-speed environment. In this paper, we proposed the Turbo ESAE and Adaptive Turbo ESAE channel estimation algorithm that is based on conventional ESAE algorithm and utilize the soft output of the Turbo decoder. computer simulation results show that the proposed methods have lower algorithm complexity and shorter processing delay than iterative channel estimation algorithms, and can decrease the effects of the error accumulation in time and frequency selective channel.
the failure of a safety-critical system, though undesirable, is often a source of valuable lessons that can help prevent future failures. Current analysis practices do not always yield as much knowledge as they might ...
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A method for processing images prior to normalized mutual information based registration and an enhancement of the registration measure are presented. the method relies on k-means clustering of the intensity distribut...
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Delayed enhancement imaging is a recently described technique that enables for the first time, the direct observation of areas of myocardium that have scarred following infarction. When this information is combined wi...
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Human factors contribute to risk in safety critical systems. However, current approaches to integrating human factors issues in the development of safety critical systems appear not fully sufficient. In this paper a n...
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Domain Module is essential for many different kinds of technology Supported Learning Systems. Some authors have pointed out the need of tools that may develop the domain module in an automatic or semi-automatic way. N...
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In this paper, a new method for fast comparing DNA sequence is presented. the method is called as fast comparable code (FCC). For long DNA sequence, the compare is imported but with very heavy calculate load. this pap...
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In this paper, a new method for fast comparing DNA sequence is presented. the method is called as fast comparable code (FCC). For long DNA sequence, the compare is imported but with very heavy calculate load. this paper studies the way to reduce the compare load and by real computer examination to show the FCC method efficiency.
Nowadays, the military authorities concerned over the world adopt computer-assisted simulation techniques for training. the training level and real combat effectiveness for military army had highly advanced. the paper...
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Nowadays, the military authorities concerned over the world adopt computer-assisted simulation techniques for training. the training level and real combat effectiveness for military army had highly advanced. the paper introduces a computer-assisted simulation system for antiaircraft artillery trainings and elucidates program for system implementation.
Today’s advances in sensor technology make it feasible to embed sensing, communication and computation capabilities in small untethered nodes. However, node lifetime is still severely restricted by the limitations of...
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Human errors are well recognised in avalanche education as one of the most important factors causing avalanche accidents. However, to date no adequate methods exist to enable people to learn about their own human weak...
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