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Path-measuring receiver and method for processing base-band signal

A baseband signal processing and baseband signal technology, applied in the direction of wireless communication, radio/inductive link selection arrangement, electrical components, etc., can solve the problems of inapplicable new protocols, etc., achieve convenient application, small size, and solve the problem of network coverage optimization Effect

Inactive Publication Date: 2007-09-05
广州钟鼎木林网络技术有限公司
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AI Technical Summary

Problems solved by technology

[0004] Some previous drive test receivers were mainly built for the second-generation mobile communication protocol, so they are not suitable for the new protocol

Method used

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  • Path-measuring receiver and method for processing base-band signal
  • Path-measuring receiver and method for processing base-band signal
  • Path-measuring receiver and method for processing base-band signal

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Embodiment Construction

[0040] Below in conjunction with accompanying drawing and embodiment the present invention will be further described:

[0041] Please refer to Fig. 1. The drive test receiver of the present invention is mainly composed of a baseband signal processing device 2, a parameter display device 3, a radio frequency receiving device 1, a GPS module 4 and an antenna. The antenna and the radio frequency receiving device 1 are connected through an SMA head, and the radio frequency receiving device Device 1 couples the TD-SCDMA downlink signal of the base station or the base station analog transmitter from the air through the antenna, and after filtering, transmits it to the baseband signal processing device 2 through the 20-pin socket interface for a series of signal processing, and finally obtains the physical Various network performance parameters of the signal obtained in the location are output to the parameter display device 3 for display. Usually, the parameter display device 3 is i...

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Abstract

The invention comprises: a RF receiver used for receiving TD-SCDMA signals through antenna and outputting I and Q difference baseband signals; a baseband signal processing device used for measuring each kind of network performance parameter based on said IQ difference signals; a parameter display device used for real-time displaying each network performance parameter. The invention also reveal a method thereof, which comprises: a) converting the downlink signals into digital format; b) making synchronization to find the initial location of TD-SCDMA frame and optimal sampling point; c) extracting the Midamble data of time slot 0 to estimate the character of radio channel; d) using radio channel character and Midamble data to make multi-path combination, de-spread and de-scramble process, and to output the broadcast channel data; e) decoding the broadcast data to form bit data; f) measuring each network performance parameters.

Description

【Technical field】 [0001] The invention relates to the field of mobile communication, in particular to a TD-SCDMA drive test receiver and a baseband signal processing method of the drive test receiver. 【Background technique】 [0002] With the continuous increase in the intensity of the current communication network deployment project, mobile communication operators in various places have increasingly stringent requirements for on-site simulation tests of various manufacturers. The communication network system needs to have an accurate assessment before deploying the station. location and signal coverage, so engineers need a transmitter that can better simulate base station signals, transmit signals at one end, receive and test and analyze at the other end, so that they can accurately evaluate the location and location of the station deployment. signal coverage. The device at one end of the signal transmission is called the base station analog transmitter, and the device that...

Claims

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Application Information

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IPC IPC(8): H04Q7/34H04B1/707H04W24/06
Inventor 龙建标
Owner 广州钟鼎木林网络技术有限公司
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