Signal receiving method and apparatus in wireless base station

A technology of signal receiving device and signal device, which is applied in the direction of wireless communication, selection device, radio/inductive link selection arrangement, etc., and can solve the problems that code streams cannot be processed in parallel, unsatisfactory, and affect post-processing quality, etc.

Inactive Publication Date: 2003-06-11
ZTE CORP
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Problems solved by technology

[0005] In the signal receiving device in the wireless base station of the conventional mobile communication system, the method of sampling and quantizing the low-pass band-limited analog signal in the baseband is usually used to realize the digitization of the received signal, so that the receiver does not have the flexibility to change the channel bandwidth, and also It cannot solve the problems of complex design and high production cost inherent in the analog receiving chain
Among them, the center frequency and bandwidth of general filters are usually fixed. To realize a filter with accurate performance and stable indicators, due to the use of many analog devices, the implementation circuit is more complicated, and the production cost is correspondingly increased; Many nar

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  • Signal receiving method and apparatus in wireless base station
  • Signal receiving method and apparatus in wireless base station
  • Signal receiving method and apparatus in wireless base station

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Embodiment Construction

[0022] The uplink signal received from the antenna is generally a radio frequency signal with a wide frequency range (generally 0.1MHz to 2.2GHz). At present, the performance of the A / D converter is difficult to directly sample such a high frequency signal, and subsequent processing Devices are also difficult to meet the requirements. Therefore, the broadband mid-frequency band-pass sampling proposed by the present invention is a relatively practical processing method.

[0023] according to figure 1 As shown, the method set forth in the present invention can be realized in the following steps:

[0024] Step 1 (102): The RF analog signal is mixed into an IF analog signal.

[0025] Receive the uplink signal of the antenna, filter the out-of-band signal through the band-pass filter 211, amplify it by the first low-noise amplifier 212 and mix it with the mixer 213, and convert the radio frequency signal into a center frequency f 0 , the bandwidth is B 0 Broadband intermediate ...

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Abstract

The invention relates to a method and device for receiving signal in wireless base station, which converts the upstream signal to high intermediate frequency signal through the front of analogue radio wide band by the antenna of the base station. After being sampled digitally by high speed A/D, multi-path digital channel signals are send to the PLC digital down frequency conversion circuit and divided into multi-path base band orthogonal signals, The after software base band processing based on the base band digital signal processing technology, the bit flow is formed and send to BSC (base station controller) for further processing. In the device, a radio frequency front processing module, a high speed wide band A/D converter, a PLC digital down frequency conversion module and a base band digital signal processing module are connected in order.

Description

technical field [0001] The invention belongs to the field of mobile communication, in particular to a wireless base station signal receiving method and device based on baseband digital signal processing technology. Background technique [0002] With the continuous development of modern mobile communication technology, in the current mobile communication market, multiple systems coexist and new systems emerge constantly, which brings inconvenience to developers and users. The current communication system is constantly transitioning from an analog system to a digital system, which is more conducive to making the communication system adopt a standardized and modular structure. With the emergence of high-speed, high-performance hardware, it has become possible to use software to realize as many hardware functions as possible through software loading. [0003] In the field of mobile communication, although the technology of digital receivers is relatively mature, they generally ...

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Application Information

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IPC IPC(8): H04W88/08H04W88/12
Inventor 王晓光赵宇王博明郭青
Owner ZTE CORP
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