Four-antenna diversity transmission device based on GMC system, transmission method and receiving device, receiving method

A technology of antenna diversity and transmission method, which is applied in the direction of space transmit diversity, orthogonal multiplexing system, diversity/multi-antenna system, etc., and can solve the problems of high PAR problem and high sensitivity of carrier offset error in OFDM system , to achieve the effect of ensuring link communication quality and reducing the sensitivity of carrier frequency offset error

Inactive Publication Date: 2008-12-17
SHANGHAI RES CENT FOR WIRELESS COMM
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Problems solved by technology

[0003] However, the existing wireless communication system mainly combines multi-antenna diversity transmission technology with OFDM system to realize. However, OFDM system is difficult to solve the problem of high PAR and is highly sensitive to carrier offset error. Therefore, how to solve the shortcomings of wireless communication system Become a technical problem to be solved urgently by those skilled in the art

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  • Four-antenna diversity transmission device based on GMC system, transmission method and receiving device, receiving method
  • Four-antenna diversity transmission device based on GMC system, transmission method and receiving device, receiving method
  • Four-antenna diversity transmission device based on GMC system, transmission method and receiving device, receiving method

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Embodiment Construction

[0022] see figure 1 , the 4-antenna diversity transmission device based on the GMC system of the present invention mainly includes: a serial-to-parallel conversion module, a linear transformation module, a shaping filter bank module, a multi-antenna diversity coding module, a cyclic prefix adding module, and a radio frequency transmission module.

[0023] The serial-to-parallel conversion module is used to convert the modulated serial symbol data sequence into a parallel symbol data sequence, the linear transformation module is used to linearly transform the parallel symbol data sequence, and the shaping filter bank module uses Divide the entire channel bandwidth into a plurality of mutually orthogonal subbands, and make each subband correspond to a subfilter, and map the linearly transformed parallel symbol data sequences to the corresponding subbands respectively To perform shaping filtering, the multi-antenna diversity coding module is used to convert the parallel symbol da...

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Abstract

Disclosed is a four-antenna diversity transmitting device based on a GMC system, a transmitting method and a receiving device and a receiving method. In the transmitting device, a shaping filter pack module divides the whole channel bandwidth intp a plurality of orthogonal sub-channels, and each sub-channel is corresponding to a subfilter, then each pixel symbol in the column vector of the signal is respectively mapped onto the corresponding sub-channel, and then a multi-antenna diversity coding module converts the parallel symbol data sequence into the similar Alamouti structure and the signal pack with the diversity degree 4, finally four antennas are adopted to transmit the signal pack in eight block time, while in the receiving device, the minimum mean-squared error is adopted to balance the received signal, then the signal sequence is processed with the sub-belt matching filter, to generate the symbol data sequence of outputting a plurality of sub-belts in parallel, thereby obtaining the full diversity gain and effectively ensuring the communication quality of the chain, also realizing the peak-to-average power ratio and the reduction of the carrier frequency deviation error suseptibility.

Description

technical field [0001] The invention relates to a 4-antenna diversity sending device, a sending method, a receiving device and a receiving method based on a GMC system. Background technique [0002] In a broadband wireless communication system, since the channel is a time-dispersed fading channel, better transmission performance can be obtained by using multi-antenna technology and space diversity. Compared with a single-antenna system or a system with fewer antenna configurations, a multi-antenna system can double the system capacity, while a 4-antenna system has become a very Competitive system configuration. [0003] However, the existing wireless communication system mainly combines multi-antenna diversity transmission technology with OFDM system to realize. However, OFDM system is difficult to solve the problem of high PAR and is highly sensitive to carrier offset error. Therefore, how to solve the shortcomings of wireless communication system Become a technical probl...

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Application Information

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IPC IPC(8): H04B7/04H04J11/00
Inventor 汪凡熊勇杨秀梅张小东
Owner SHANGHAI RES CENT FOR WIRELESS COMM
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