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GAO Ming, GE Jian-hua, LI Jing. Linear Dispersion Orthogonal Space-Time Block Codes[J]. JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2010, 19(3): 0357-361.
Citation: GAO Ming, GE Jian-hua, LI Jing. Linear Dispersion Orthogonal Space-Time Block Codes[J].JOURNAL OF BEIJING INSTITUTE OF TECHNOLOGY, 2010, 19(3): 0357-361.
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Linear Dispersion Orthogonal Space-Time Block Codes

  • State Key Laboratory of Integrated Service Networks, Xidian University, Xian 710071, China

  • Received Date:2009-01-06
    Abstract
  • A new architecture of space-time codes as a combination of orthogonal space-time block codes (OSTBC) and linear dispersion codes (LDC) is proposed in order to improve the bit error rate(BER) performance of OSTBC. The scheme proposed is named linear dispersion orthogonal space-time block codes (LDOSTBC). In LDOSTBC scheme, firstly, the data is coded into LDC codewords. Then, the coded LDC substreams are coded into OSTBC codewords again. The decoding algorithm of LDOSTBC combines linear decoding of OSTBC and ML decoding or suboptimum detection algorithms of LDC. Compared with OSTBC scheme when the rate of LDC is M t R, the performance of LDOSTBC scheme can be improved without decreasing the data rate, where M tis the number of transmit antennas and Ris the spectral efficiency of the modulation constellation. If some rate penalty is allowed, when the rate of LDC is less than M t Rthe performance of LDOSTBC can be improved further.
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