Linear dispersion space-time coding method applicable to any antenna number

A space-time coding and quantity technology, applied in the field of channel coding, can solve the problem of sacrificing orthogonality in quasi-orthogonal design, and achieve the effect of good bit error performance and accurate bit error rate

Inactive Publication Date: 2011-04-27
ZHEJIANG UNIV
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Problems solved by technology

Although QOSTBC can guarantee full-rate transmission, the quasi-orthogonal design sacrif...

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  • Linear dispersion space-time coding method applicable to any antenna number
  • Linear dispersion space-time coding method applicable to any antenna number
  • Linear dispersion space-time coding method applicable to any antenna number

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with accompanying drawing.

[0024] The present invention considers a measure different from the traditional bit error rate of codewords, and this measure reflects the bit error rate of codewords more accurately than the previous average paired bit error rate. The coding method analyzed based on this metric has better bit error performance. The present invention uses this method to design a coding structure suitable for any system with any number of transmitting and receiving antennas. This coding can balance the transmission rate and bit error rate of the code word.

[0025] The present invention is developed on the basis of MIMO system, the model of MIMO channel and space-time coding is as follows figure 1 As shown, the constellation mapping in the figure can adopt either QAM modulation or PSK modulation. Assuming that the number of transmitting antennas is M and the number of receiving antennas is...

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Abstract

The invention relates to a linear dispersion space-time coding method applicable to any antenna number. The method comprises the following steps of: determining a time length of a coding module and an information symbolic number to be transmitted; randomly generating MT complex vectors u1, u2, ..., uMT, and converting each complex vector into a Hermite matrix; generating an MT-order diagonal matrix D, multiplying D rightwards by the Hermite matrix to acquire a new MT-order square matrix U, randomly selecting L column vectors from the matrix U, and rearranging each column vector from top to bottom and from left to right to form an M*T matrix; and finally calculating L singular values for constructing the matrix respectively, solving sum of square and sum of biquadrate of each group of singular values to acquire two groups of sequences, and finishing coding until the two groups of sequences accord with set conditions. The method is applicable to application occasions of any number of transmitting antennas and receiving antennas and can freely set coding transmission rate.

Description

technical field [0001] The invention belongs to the field of channel coding, and in particular relates to a linear diffuse space-time coding method suitable for any number of transmitting antennas and receiving antennas under a MIMO channel. Background technique [0002] In recent years, with the continuous development of communication technology, wireless communication has become one of the most active scientific research and application fields in the world today. The rapid development of the wireless communication industry is also facing major technical problems, that is, how to ensure the high reliability of wireless communication and further increase the data transmission rate, especially with the rapid growth of multimedia services, this demand is becoming more and more urgent. Traditional wireless communication technology uses frequency bandwidth and transmission power to increase the transmission rate, but the utilization of these two resources has become saturated, s...

Claims

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Application Information

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IPC IPC(8): H04L1/06
Inventor 谢磊陈惠芳朱诗宇
Owner ZHEJIANG UNIV
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