Multi-input multi-output orthogonal frequency division multiplexing system transmission method and transceiver

An orthogonal frequency division and multiple output technology, applied in multi-frequency code system, diversity/multi-antenna system, preventing/detecting errors through diversity reception, etc., can solve the problem of effectively suppressing inter-group interference and multi-user interference, There are no problems such as a good coding gain optimization method to achieve the effect of simple structure and simple calculation

CN101321144AInactive Publication Date: 2008-12-10ZTE CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2008-12-10
Estimated Expiration
Not applicable · inactive patent

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Abstract

This invention discloses a transmission method of orthogonal frequency division multiplexing with multiple inputs and outputs, including: (1) an emitting end processes space-frequency coding to emitted data and processes space-time coding to the data, then processes serial / parallel transformation, inverse fast Fourier transform algorithmic transformation, adding cyclic prefix, parallel / serial transformation, then emits the data; (2) after receiving the data received from the emitting end, a receiving end respectively processes removing cyclic prefix, serial / parallel transformation, inverse fast Fourier transform algorithmic transformation and parallel / serial transformation to the received data in two symbol periods, then processes space-time decoding to the data, at last processes data combination. This invention further discloses a MIMO OFDM system coding emitter and a receiver, and an emitting method and a receiving method. This invention obtains an effective transreceiver suitable for adopting the MIMO OFDM system of space-time frequency coding and corresponding transmission method through adjusting a transreceiver mechanism under the condition of not increasing the transreceiver complexity.
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Description

technical field

[0001] The present invention relates to transceiver technology in the field of mobile communication, in particular to a MIMO (Multiple Input Multiple Output, Multiple Input Multiple Output) OFDM (Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing) system transmission method and a transceiver. Background technique

[0002] The MIMO system can provide both diversity gain and multiplexing gain. Most of the existing MIMO technologies are originally designed to obtain the maximum diversity gain or multiplexing gain. For example, space-time coding STC (Space-Time Codes) - including space-time coding (Space-Time Block Code, referred to as STBC), space-frequency coding (Space-Frequency Block Code, referred to as SFBC) and space-time trellis code (Space-Time Block Code) -Time Trellis Code, STTC) - designed to obtain the greatest diversity gain; and layered space-time code (Bell Laboratories Layered Space Time, BLAST) and vertical la...

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Embodiment Construction

[0044] The present invention will be described below in conjunction with the accompanying drawings and specific embodiments, but not as a limitation of the present invention.

[0045] The purpose of the present invention is to adjust the structure of the transceiver to obtain a highly efficient transceiver and a corresponding transmission method suitable for a MIMO OFDM system using space-time-frequency coding without increasing the complexity of the transceiver. The core idea is that the transmitting end uses SFBC and STBC jointly, and the receiving end performs space-time decoding and space-frequency decoding respectively in two consecutive symbol periods. Compared with the traditional method, the method of the invention can simultaneously obtain the second-order space and second-order time diversity gains, and the encoding and decoding processes are all based on linear processing, and the calculation is simple.

[0046] The method applicable to the MIMO OFDM system provided...