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Special channel broad business beam shaping implementation method and system

A technology of service beams and dedicated channels, applied in the field of wide service beamforming, can solve problems such as inability to apply wide service beamforming, multi-antenna transmit power exceeding system design requirements, etc.

Inactive Publication Date: 2008-01-02
ZTE CORP
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Problems solved by technology

[0005] Chinese invention patent application "A Method for Wide Beam Forming for Smart Antenna Base Stations" (Application No.: 200310112369, Publication No.: CN1547333A, Publication Date: November 17, 2004) provides a A method to form fixed narrow beams that are equal to the number of antennas in a sector, and fit them to obtain the beamforming weights of public channels, but this method cannot be applied to dedicated channel wide service beamforming , and the total downlink transmission power of multiple antennas may exceed the system design requirements

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  • Special channel broad business beam shaping implementation method and system
  • Special channel broad business beam shaping implementation method and system
  • Special channel broad business beam shaping implementation method and system

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Embodiment Construction

[0045] As shown in Figure 1, the dedicated channel wide service beamforming realization system of a preferred embodiment of the present invention includes:

[0046] 1) Antenna array (101)

[0047] 2) Multi-channel amplification unit (102)

[0048] 3) Multi-channel transceiver unit (103)

[0049] 4) Uplink angle of arrival estimation and baseband processing unit (104)

[0050] 5) Downlink wide beamforming weight generation unit (105)

[0051] 6) Downlink beamforming unit (106)

[0052] For the uplink, the multi-channel amplifying unit (102) works in a low-noise amplifying mode, and the wireless signal is received by the antenna array (101), amplified by the multi-channel amplifying unit (102), and then transmitted to the multi-channel transceiver unit (103 ); the multi-channel transceiver unit (103) converts the radio frequency signal into a digital baseband signal after filtering, down-converting, analog-to-digital conversion, etc.; the signal of the multi-channel transcei...

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Abstract

The invention relates to a shaping method of special channel wideband service wave beam, and a relative device, wherein the method uses user target direction as center, uses angle distance to form a plurality of narrow service beams, to be weighted and layered to synthesize wide service beam. The device comprises an antenna array, a multi-path amplifier, a multi-path receiving / sending signal machine, an ascending reach angle evaluation and base band processor, a descending wideband beam shaping weighting value generator, and a descending beam shaping unit. The invention can effectively improve beam width, which only stores the shape weighting values of one group of general narrow service beams with different directions, without differentiating different antenna states, with easy application, reduced the effect of narrow beam width on the property of intelligent antenna property, improved system stability and reliability.

Description

technical field [0001] The present invention relates to a method and system for realizing wide service beamforming in a wireless communication system, in particular to a synchronous Code Division Multiple Access (CDMA) communication system using a dedicated channel width of smart antenna technology. Service beamforming method and system. Background technique [0002] Using the spatial characteristics of signal transmission and digital signal processing technology, smart antennas can realize uplink angle of arrival estimation and downlink beamforming, so as to reduce noise interference, increase capacity, expand coverage, improve communication quality, reduce transmit power and improve wireless data. transfer rate purposes. [0003] For communication systems using smart antenna technology, such as Time Division Duplex (hereinafter referred to as TDD) synchronous CDMA communication systems, the uplink and downlink channels need to meet the requirements of symmetry, but the ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04J13/00
Inventor 秦洪峰郭昕李斌王强
Owner ZTE CORP
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