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Wireless communication system with full diversity and full code rate

A wireless communication system and code rate technology, applied in the field of communication, can solve the problems of increasing the complexity of decoding and reducing the performance of the wireless communication system, and achieve the effect of reducing the complexity and improving the performance.

Active Publication Date: 2015-04-29
EASTERN LIAONING UNIV
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  • Description
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Problems solved by technology

[0002] In the prior art, space-time coding that can truly achieve full code rate and full diversity is limited to systems with two transmitting antennas, and systems with more than two transmitting antennas can only be implemented by reducing the code rate or using approximately orthogonal (quasi-orthogonal) space-time coding. Time coding is implemented, which reduces the performance of the wireless communication system, and the complexity of decoding is also improved compared with orthogonal coding

Method used

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  • Wireless communication system with full diversity and full code rate
  • Wireless communication system with full diversity and full code rate
  • Wireless communication system with full diversity and full code rate

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Embodiment 1

[0010] see figure 1 , in the embodiment of the present invention, in order to obtain a wireless communication system with good performance with full diversity and full code rate, for a system with 4 transmitting antennas, at the transmitting end, the constellation diagram matching is first performed on the input binary digital signal, The input binary digital signal is converted into a complex analog signal, and then the modulated complex analog signal is linearly encoded. The quasi-orthogonal encoding used in the present invention still adopts the Jafarkhani encoding method, and the encoding matrix is ​​as follows:

[0011] Q J = A 12 A 34 - A 34 ...

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Abstract

The invention discloses a wireless communication system with full diversity and a full code rate. Planisphere matching is performed on input binary digit signals on a transmitting terminal. Uniform encoding is performed on modulated plural form analog signals in a Jafarkhani coding mode. Uniform encoded data are inversely converted to composite form analog signals through Fourier transform to be output. Signals of different transmitting sets in transmitting antennas are separated through the Fourier transform on a receiving terminal, and orthogonal decoding is performed. According to the wireless communication system, a system with more than four transmitting antennas achieves the full diversity and the full code rate on the transmitting terminal and the receiving terminal respectively, and therefore properties of the whole system are improved. The wireless communication system can also use an orthogonal decoding mode, and the complexity of decoding is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a wireless communication system with full diversity and full code rate. Background technique [0002] In the prior art, space-time coding that can truly achieve full code rate and full diversity is limited to systems with two transmitting antennas, and systems with more than two transmitting antennas can only be implemented by reducing the code rate or using approximately orthogonal (quasi-orthogonal) space-time coding. Time coding is implemented, which reduces the performance of the wireless communication system, and the complexity of decoding is also increased compared with orthogonal coding. Contents of the invention [0003] The purpose of the present invention is to provide a wireless communication system with more than 4 transmitting antennas capable of full diversity and full code rate at the same time, so as to solve the problems raised in the above-mentioned background techno...

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Application Information

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IPC IPC(8): H04L1/00H04L1/06
CPCH04L1/0041H04L1/0045H04L1/0625H04L1/0668
Inventor 宋巍
Owner EASTERN LIAONING UNIV
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