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Fully adaptive weight value updating method and device for array antenna

An adaptive weight and array antenna technology, applied in antennas, antenna arrays, electrical components, etc., can solve the problem of large hardware scale, achieve the effects of reducing scale and implementation cost, strong beam gain, and reducing opinion costs

Inactive Publication Date: 2007-06-27
ZTE CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0011] The technical problem to be solved by the present invention is to overcome the problem that the hardware scale is too large and the implementation cost is too high when the full adaptive array antenna weight update is realized in the prior art

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  • Fully adaptive weight value updating method and device for array antenna
  • Fully adaptive weight value updating method and device for array antenna
  • Fully adaptive weight value updating method and device for array antenna

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Embodiment Construction

[0027] The implementation of this technical solution in the WCDMA system will be described in further detail below in conjunction with the accompanying drawings.

[0028] Figures 1 and 2 have been described in detail above.

[0029] Fig. 3 is a flowchart of the method for updating the full adaptive weight of the array antenna proposed by the present invention. As shown in Fig. 3, the present invention proposes a method for fully adaptive weight update of an array antenna, which includes the following steps:

[0030] The first step is to perform RF front-end processing on the input signal, that is, to convert the wireless signal into a baseband digital signal;

[0031]The second step is to perform a weighted summation of the obtained baseband digital signal with the current beam weight;

[0032] In the third step, the result of the weighted summation is conjugate multiplied by the corresponding pseudo-random sequence code to obtain the signal after descrambling and despreading;

[...

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Abstract

The present invention discloses a fully adaptive weight value updating method and device for array antenna. Within the time section of receiving frequency guide signal, the frequency guide symbol from higher hierarchy is frequency expanded with the frequency expanding code corresponding to the sending end and the frequency expanding sequence is used as reference sequence. The array weight value is updated in steepest descent algorithm with the received sequence after descrambling and before dispreading and containing frequency guide data as the input sequence according to one minimal mean-square error. Using the method and device of the present invention can simplify system, inhibit system interference and lower system cost.

Description

Technical field [0001] The present invention relates to a code division multiple access (CDMA) communication system in the communication field, and particularly relates to smart antenna technology in the system. Background technique [0002] Code Division Multiple Access (CDMA) is a multiple access method based on spread spectrum technology and has recently become another multiple access method applied to cellular wireless systems in addition to the existing FDMA and TDMA methods. Compared with existing methods, CDMA has many advantages, such as high spectrum utilization and simple planning. Because of this, the CDMA system has become the mainstream in the third generation of mobile communications. [0003] In a digital wireless communication system, due to various noise, multipath, and fading interferences in the spatial channel, the nature of the signal received by the receiver is not very ideal. In order to receive signals effectively, a variety of technologies are used in the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J13/02H01Q21/00
Inventor 吴涛谢澜涛
Owner ZTE CORP
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