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

A technology of frequency domain equalization and receiving devices, applied in diversity/multi-antenna systems, space transmit diversity, etc., can solve problems such as waste of resources, achieve the effects of reducing overhead and improving spectrum efficiency

Inactive Publication Date: 2007-06-20
SHANGHAI RES CENT FOR WIRELESS COMM
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, a lot of resources are wasted

Method used

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

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Embodiment Construction

[0050] As shown in Fig. 1, the transmitting 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.

[0051] 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.

[0052] 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.

[0053] Shaping filter bank 3 is connected to the output...

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Abstract

The invention is concerned with the multi-antenna multiplying sending, receiving equipment and the frequency domain equilibrium method based on GMC, includes computation WMMSE=sigmas2...H[sigmas2......H+sigman2I]-1, including the following steps: 1) recodes [sigmas2......H+sigman2I]-1 as ...', sets ...' include M*M number of small matrix, and each matrix is the diagonal matrix; 2) decomposes ...' as the sum of the semi-diagonal matrix along the main diagonal and the semi-diagonal matrix along the anit-diagonal; 3) transforms the ...' counter-process into the contrary operation of the diagonal matrix or the block diagonal matrix in order to compute WMMSE; WMMSE is the MMSE method multiply matrix, sigmas is the signal energy, ... includes M*M number of N*N diagonal matrix, M is the number of the emissive antenna, N is the length of FFT, sigman is the noise energy, ...' is process parameter. The predigest equalizer of the invention makes the complex of contrary operation of the matrix algorithm from O((MN)3) to O(M3N) in the MMSE equilibrium, and reduces the cost of the system.

Description

technical field [0001] The present invention relates to a GMC-based multi-antenna multiplexing sending and receiving device and a frequency domain equalization method, especially in a wireless communication system where symbols on the constellation diagram after modulation and mapping cannot be obtained when equalization processing is performed at the receiving end. In this case, 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 comm...

Claims

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Application Information

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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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