Cascade emission method of channel coding and space time coding

A technology of channel coding and space-time coding, which is applied in the field of cascaded transmission of channel coding and space-time coding in multiple-input multiple-output OFDM systems, can solve problems such as space-time transmission not involving channel coding, and achieve improved Performance, Guaranteed Coding Gain Effect
CN101227249AInactive Publication Date: 2008-07-23ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
ZTE CORP
Publication Date
2008-07-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for cascade-emitting communication channel codes and space-time codes in a multi-input multi-output frequency division multiplexing system. The method of the invention comprises: firstly, encoding information bits which are outputted by a information source in communication channel by an originating end and obtaining information bits and check bits, then, confirming whether the originating end needs carrying out second deletion or not according to the transmitting aerial number n and the average number of pilot frequencies which are needed by each sub-belt and confirming the order of a first deletion, the second deletion and interlace according to an interlace mode, modulating binary sequences which are obtained by the originating end and obtaining modulation symbols, transforming the modulation symbols from parallel to serial by the originating end, carrying out space-time encoding, and obtaining code words after encoding, and finally mapping the code words and the pilot frequency on different sub-carrier waves by the originating end and emitting through n strips of transmitting aerials. The MIMO+OFDM not only can obtain coding gains of the communication channel codes to the maximum but also can obtain diversity gains of the space-time codes through utilizing the invention.
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Description

technical field

[0001] The present invention relates to a system coding transmission method, in particular to a cascade transmission method of channel coding and space-time coding in a multi-input multi-output orthogonal frequency division multiplexing system. Background technique

[0002] Multi-antenna (MIMO) is an efficient wireless transmission technology developed in recent years, which refers to the use of multiple transmitting antennas and receiving antennas at the transmitting end and receiving end, respectively. The traditional communication system is a single-input-single-out SISO system. MISO and SIMO based on transmit diversity and receive diversity are also special cases of MIMO. The basic idea of ​​MIMO is to use multiple antennas at both ends of transmitting, receiving or transmitting and receiving, and make full use of the independent fading characteristics between channels through space-time processing technology to improve spectrum utilization, communication...

Claims

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