This paper deals with optimal training design and placement over multipleorthogonalfrequencydivisionmultiplexing(ofdm) symbols for the least squares(LS) channel estimation in multiple-inputmultipleoutput(mimo) OF...
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This paper deals with optimal training design and placement over multipleorthogonalfrequencydivisionmultiplexing(ofdm) symbols for the least squares(LS) channel estimation in multiple-inputmultipleoutput(mimo) ofdm ***,the optimal pilot sequences over multipleofdm symbols are derived by co-cyclic Jacket matrices based on the minimum mean square error(MSE) of the LS channel ***,an enhanced channel estimation method using sliding window is proposed to improve further the performance for the optimal pilot sequences in fast-varying *** results show that the enhancedmethod can efficiently improve the performances for the optimal pilot sequences over two and four ofdm symbols,especially in fast-varying channels.
In order to improve the video transmission performance in multiple-input multiple-output orthogonal frequency division multiplexing （mimo-ofdm） system, a new scheme, which integrates multiple Description Coding （MD...
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In order to improve the video transmission performance in multiple-input multiple-output orthogonal frequency division multiplexing （mimo-ofdm） system, a new scheme, which integrates multiple Description Coding （MDC）, Low Density Parity Check （LDPC） coding and hybrid space time coding, is proposed in this letter. In particular, a hybrid space time coding algorithm is combined with LDPC codes to perform Unequal Error Protection （UEP） of MDC encoded video streams. Comparing with the UEP transmission with only LDPC codes, the proposed scheme achieves more than ldB gain in terms of Signal to Noise Ratio （SNR） when the Peak Signal to Noise Ratio （PSNR） of reconstructed video is above 30dB.
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