System and method for testing channel transmission performance with the practical channel and computer simulation

Abstract

The invention provides a system and method for the real channel integrating with the transmission property of testing channel of stimulation. It adopts the open loop mode, and the transmission property is tested by the computer stimulation sends the information of data packet and checking the change of obtained data information. The advantages of the invention are that: using the real channel integrating with the computer stimulation to test the transmission property to get real transmission property of channel, and supports one to many / many to many communication mode, and it can used in different transmission channel, and has the advantages of agility and low cost, and it can satisfy the requirement for high speed and real time for the one to many / many to many complex communication system,avoid the time delay caused by leading in complex response mechanism.

Description

technical field [0001] The invention relates to data transmission in a communication system, in particular to a system and method for testing channel transmission performance with actual channels combined with computer simulation. Background technique [0002] The performance of the transmission channel is a key factor in a communication system. The analysis and testing of channel transmission performance are necessary means for designing, planning and deploying communication systems. At present, the analysis and testing methods of channel transmission performance mainly include the following: [0003] 1) Theoretical model and simulation analysis [0004] According to the existing theoretical models of transmission channels, such as Rayleigh statistical model, Rice statistical model, Hata model, etc., use computer to model the channel, simulate the transmission channel, and obtain performance curves under different signal-to-noise ratios. The advantages of this method are...

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Problems solved by technology

[0005] However, this method also has the following defects: the channel model only reflects the first-order or high-order statistical characteristics of the transmission channel in a specific environment, and there is a certain difference from the actual channel characteristics. The obtained data is used to analyze the transmission performance of a specific channel in a specific communication system; the stability of a specific transmission channel cannot be analyzed in combination with specific equipment; the channel model, data sending, and receiving processes are all implemented by software, and the programming workload is relatively large

[0008] However, this method also has the following defects: due to the characteristics of the transmission channel, the self-loop method may not reflect its true characteristics

[0011] However, this method also has the following defects: special test instruments need to be purchased, and many special test instruments need to be purchased for point-to-multipoint and multipoint-to-multipoint transmission, resulting in a sharp increase in cost; test means, test methods, test The range and recording method of test data are limited by the functions supported by the special test instrument; the sending end and the receiving end are located in different special test instruments, and the sending and receiving parties need to negotiate and synchronize

[0014] However, this method also has the following defects: the self-loop method may not reflect the true characteristics of the channel under test

[0017] However, this method also has the following defects: the data sending and receiving processes are all realized by software, and the programming workload is relatively large; the sending end and the receiving end are implemented in different computers, and the sending and receiving ends need to negotiate and synchronize

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