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Modulation method based on multiple-input multiple-output wireless communication system

A technology of wireless communication system and modulation method, applied in the field of modulation based on MIMO wireless communication system, capable of solving the problems of limited performance gain and poor use of modulation diversity

Inactive Publication Date: 2011-08-31
BEIJING UNIV OF POSTS & TELECOMM
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the case of BICM, although bit-interleaved modulation increases the time diversity of coded modulation, its performance gain is limited due to the lack of better use of modulation diversity

Method used

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  • Modulation method based on multiple-input multiple-output wireless communication system
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  • Modulation method based on multiple-input multiple-output wireless communication system

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Embodiment Construction

[0083] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention.

[0084] It should be noted that, if there is no conflict, the embodiments of the present invention and various features in the embodiments can be combined with each other, and all are within the protection scope of the present invention. In addition, the steps shown in the flow diagrams of the figures may be performed in a computer system, such as a set of computer-executable instructions, and, although a logical order is shown in the flow diagrams, in some cases, the sequence may be different. The steps shown or described are performed in the order herein.

[0085] Embodiment of the modulation method according to the invention

[0086] see figure 1 and 2 , to int...

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Abstract

The invention discloses a modulation method based on a multiple-input multiple-output wireless communication system and a wireless device. In the method, code blocks are obtained by coding data information to be sent by a sending end, modulation symbols are obtained by modulating each code block, each modulation symbol is scheduled into each symbol group, a symbol group matrix is formed by takingeach symbol group as each row, and a symbol group matrix after the rotating modulation is obtained by carrying out the rotating modulation to the modulation symbols in the symbol groups according to a set rotating angle; and spiral layering interwoven treatment is carried out to the modulation symbols in columns aiming at each column in the symbol group matrix after the rotating modulation by thesending end, then the modulation symbol in the column after the spiral layering interwoven treatment is scheduled into one or more than one antenna group, and inversed interwoven treatment is carriedout respectively to a Q way signal component of the modulation signal in each antenna group. The error rate and the frame error rate are reduced by the method, and the channel capacity in a fading channel is approached.

Description

technical field [0001] The invention relates to a modulation method in a wireless communication system, in particular to a modulation method based on a MIMO (Multiple-Input Multiple-Out-put, multiple-input-multiple-output) wireless communication system, and belongs to the technical field of wireless communication. Background technique [0002] With the development of cellular mobile communication, Internet and multimedia services, the demand for wireless communication capacity is increasing rapidly worldwide, and the available wireless spectrum is very limited. Therefore, if the utilization rate of communication spectrum is not significantly improved, it cannot meet communication capacity needs. [0003] In a single-antenna link system, channel coding (such as Turbo codes and low-density parity check codes) can be used to approach the Shannon channel capacity, and the spectrum utilization can be further significantly improved by increasing the number of antennas at the trans...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/06H04L27/34
CPCH04L27/3488H04L27/3433H04L25/0248H04L1/0071H04L25/0204
Inventor 吴湛击吴迎宾高翔张力岭王文博
Owner BEIJING UNIV OF POSTS & TELECOMM
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