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It is well known that MIMO-OFDM technology can improve the diversity gain and system capacity, increase spectrum efficiency and overcome frequency selective fading. However, few MIMO testbeds or prototypes have been considered for CMMB standards. In this work, we present a novel 2×2 MIMO structure for CMMB system. A parallel Alamouti coding is designed to decrease the complexity of MIMO implementation...
We present a new transmit strategy based on modified Alamouti codes for the simple two branch transmit diversity scheme. The OFDM payload cells from the output of the frequency interleaver is done on one transmit antenna, and the encoding is proceeded on another branch. The proposed encoding scheme can significantly simplify the processes of transforming SISO into MIMO in wireless communication systems...
The authors describe a process for designing receive diversity scheme for use in multiple-input multiple-output (MIMO) systems. In particular, a remarkably simple space-time block coded (STBC) scheme that are capable of attaining a significant fraction of the open-loop Shannon capacity of the MISO channel is derived. In this correspondence, we propose a liner minimum mean squared error (MMSE) decoder...
In this paper, we introduce a novel receive diversity scheme in high-rate, non-orthogonal space-time block coded (STBC) large multiple-input multiple-output (MIMO) systems that achieve high spectral efficiencies and coding gains. While a remarkably simple scheme (such as those presented in [1] [2]) capable of attaining a significant fraction of the open-loop Shannon capacity of the (4, 1) channel,...
This work investigates a novel semi-blind channel estimation for multiple-input multiple-output (MIMO) space-time block coding (STBC) systems. Algorithms for channel estimation based on whitening-rotation (WR) decomposition that provides a combined quality and spatial scalability is utilized. Using a space-time code-constrained input design, our approach exploits the orthogonality of the signal and...
This paper deals with the Maximum Likelihood (ML) decoding of the space-time block coding (STBC) scheme used in multiple-input-multiple output (MIMO) communication systems. Assume the existing wireless communication is the quasi-static fading channel scenario. Then the detection of the ML decoder will get very wretched especially when the decision statistic is large at the receiver side. To fix this...
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