Transmission path simulator and radio device evaluation method

A channel emulation, wireless device technology, applied in the direction of instruments, communication between multiple stations, transmission systems, etc., can solve the problem of digital baseband processing unit confirmation detection, inability to perform performance evaluation correctly, inability to perform AGC control and AFC control And other issues
CN1754332AInactive Publication Date: 2006-03-29PANASONIC CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
PANASONIC CORP
Publication Date
2006-03-29
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

During a one-path transmission path simulation, the entire signal level is maintained constant and a receiver noise imitating an SNR fluctuation caused by fading is added by a receiver noise addition section (103). During a multi-path transmission path simulation, only the amplitude fluctuation caused by fading is given to a signal of each path by an instantaneous fluctuation giving section (101) and a short-long interval fluctuation giving section (102) and the signal level of the paths synthesized by an automatic gain control section (104) is made constant. Thus, it is possible to evaluate the transmission path performance of the digital base band processing section (41) without waiting for development of a radio circuit (53), i.e., without using an AGC circuit or an AFC circuit in the reception system (50).
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Description

technical field

[0001] The invention relates to a channel emulator for simulating a wireless channel to evaluate a wireless device, and a method for evaluating the wireless device. Background technique

[0002] Usually, in the development of mobile phones, base stations of mobile phones, and mobile terminals (MT) and access points (APs) of wireless local area networks (LAN), a device that simulates wireless channels, that is, a channel emulator, is needed as a device to be developed. Environment for device performance evaluation.

[0003] By comparing the transmission characteristics obtained by adding simulated fading and receiver noise to the signal transmitted by the developed device by using a channel emulator and comparing it with the theoretical value or computer simulation value, it can be judged whether the developed device performs the expected operation. In addition, by reproducing the channel state during the running experiment, it is possible to analyze the fail...

Claims

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