As the semiconductor industry advances to nano-technology points, Network on Chip (NoC) components are becoming vulnerable to errors during the system operation. Consequently, fault-tolerant techniques for NoC are nee...
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CUDA has become a very popular programming paradigm in parallel computing area. However, very little work has been done for characterizing CUDA kernels. In this work, we measure the thread level performance, collect t...
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CUDA has become a very popular programming paradigm in parallel computing area. However, very little work has been done for characterizing CUDA kernels. In this work, we measure the thread level performance, collect the basic block level characteristics, and glean the instruction level properties for about 35 programs from CUDA SDK, Parboil, and Rodinia benchmark suites. In addition, we define basic block vectors, synchronization vectors and thread similarity matrix to capture the characteristics of CUDA programs efficiently. We find that CUDA programs have some unique characteristics at each level compared to sequential programs.
Estimating the location of a point source at the output of an array system can be challenging, especially when one needs to make the tradeoff between accuracy and computational complexity. Using a rectangular array, t...
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A novel frequency domain Doppler diversity technique for OFDM systems is proposed. The received OFDM signal is first frequency shifted to generate various diversity branches. After demodulation, branch outputs are ind...
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A novel frequency domain Doppler diversity technique for OFDM systems is proposed. The received OFDM signal is first frequency shifted to generate various diversity branches. After demodulation, branch outputs are individually weighted and added together. For Doppler spread signal, it alters fading statistics and improves the bit error rate. Extensive simulations show that combining three diversity branches with proper frequency shifts reduces BER by an order when the normalized Doppler spread is larger than 0.3.
The space-time-frequency processing for OFDM wireless mobile communications was presented. The novel space-time-frequency processing schemes for OFDM mobile communication systems were implemented by using antenna arra...
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The space-time-frequency processing for OFDM wireless mobile communications was presented. The novel space-time-frequency processing schemes for OFDM mobile communication systems were implemented by using antenna arrays. It was stated that, when the angular spread is small, multiple antennas might not be able to provide space diversity.
A study was performed on Doppler diversity for orthogonal frequency-division multiplexing (OFDM) wireless mobile communications. A novel time-frequency processing scheme was developed to exploit Doppler diversity. The...
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A study was performed on Doppler diversity for orthogonal frequency-division multiplexing (OFDM) wireless mobile communications. A novel time-frequency processing scheme was developed to exploit Doppler diversity. The extensive simulations showed that the proposed time-frequency MMSE processing scheme altered the statistics of the fading to improve BER significantly.
A novel time-frequency processing scheme is developed to exploit Doppler diversity of time varying multipath channel for OFDM mobile communication systems. Extensive simulations show that the proposed time-frequency M...
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ISBN:
(纸本)0780377575
A novel time-frequency processing scheme is developed to exploit Doppler diversity of time varying multipath channel for OFDM mobile communication systems. Extensive simulations show that the proposed time-frequency MMSE processing scheme alters the statistics of the fading to improve BER significantly.
Novel space-time-frequency processing schemes for OFDM mobile communication systems are implemented using antenna arrays, tap delay lines and Doppler branches to exploit angular spread, delay spread and Doppler spread...
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ISBN:
(纸本)0780377575
Novel space-time-frequency processing schemes for OFDM mobile communication systems are implemented using antenna arrays, tap delay lines and Doppler branches to exploit angular spread, delay spread and Doppler spread, respectively.
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