Multi-antenna duplexing transmitting based on GMC and frequency-domain equilibrium method

A transmission device, a technology of frequency domain equalization, applied in the directions of diversity/multi-antenna system, space transmit diversity, etc., can solve problems such as waste of resources, reduce overhead, simplify the large matrix inversion process, and improve the effect of spectrum efficiency

Inactive Publication Date: 2011-04-06
SHANGHAI RES CENT FOR WIRELESS COMM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Thus, a lot of resources are wasted

Method used

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  • Multi-antenna duplexing transmitting based on GMC and frequency-domain equilibrium method
  • Multi-antenna duplexing transmitting based on GMC and frequency-domain equilibrium method
  • Multi-antenna duplexing transmitting based on GMC and frequency-domain equilibrium method

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Embodiment Construction

[0046] like figure 1 , the sending device in the present invention is composed of a serial-to-parallel conversion module, a linear conversion module, a shaping filter bank, a multi-antenna multiplexing transmission module, a cyclic prefix adding module and a radio frequency transmission module connected in sequence.

[0047] The serial-to-parallel conversion module 1, whose output terminal is connected to the linear conversion module 2, is used to convert the modulated serial symbol data sequence into a parallel symbol data sequence.

[0048] The linear transformation module 2 is connected to the output terminal of the serial-to-parallel conversion module 1, and is used to map the input data symbols to multiple subbands for transmission after FFT transformation. On the one hand, frequency multiplexing gain can be obtained, and on the other hand, it can reduce The peak-to-average ratio of the transmitted signal.

[0049]Shaping filter bank 3 is connected to the output terminal...

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Abstract

The invention is concerned with a multi-antenna multiplying transmitting equipment and a frequency domain equilibrium method based on GMC including computation W[MMSE]=sigma s <2> Lambada<H>[sigma s <2> Lambada Lambada<H>+sigma n <2> I]<-1>, which includes the following steps: 1) firstly defining [sigma s <2> Lambada Lambada<H>+sigma n <2> I]<-1> as Lambada' including M*M number of small matrixes, and each matrix being a diagonal matrix; 2) decomposing Lambada' as a sum of a quasi diagonal matrix along the main diagonal and the quasi diagonal matrix along the anit-diagonal; 3) transforming the Lambada' counter-process into a contrary operation of the diagonal matrix or the block diagonal matrix in order to compute W[MMSE], wherein the W[MMSE] is an MMSE method multiply matrix, sigma s is a signal energy, Lambada includes M*M number of N*N diagonal matrixes, M is the number of an emissive antenna, N is the length of FFT, sigma n is a noise energy, Lambada' is a process parameter. The simplified equalizer of the invention enables the complex of contrary operation of the matrix algorithm to lower from O((MN)<3>) to O(M<3>N) in the MMSE equilibrium, and greatly reduces the cost of the system.

Description

technical field [0001] The present invention relates to a GMC-based multi-antenna multiplexing receiving device and a frequency domain equalization method, especially in a wireless communication system where symbols on the constellation diagram after modulation mapping cannot be obtained when the receiving end performs equalization processing, in the case of a fading channel A multi-antenna multiplexing transmission sending device and a corresponding frequency domain equalization receiving method. Background technique [0002] Multiple Input Multiple Output MIMO (Multiple Input Multiple Output) multi-antenna technology is an important way for future mobile communication systems to achieve high data rates and improve transmission quality. It is one of the major breakthroughs in modern communication technology and provides solutions for future Internet wireless networks. The bottleneck problem of business capacity demand in . Multi-antenna technology has appeared in commercia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/06H04B7/08
Inventor 熊勇梁越汪凡刘彬张小东卜智勇
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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