NDLI: A novel measurement of error vector magnitude for TD-LTE termination

Content Provider	IEEE Xplore Digital Library
Author	Xiaowen Li Deyi Peng Guozhong Wang
Copyright Year	2012
Description	Author affiliation: School of Communication and Information Engineering, ChongQing University of Posts and Telecommunications, China (Xiaowen Li; Deyi Peng; Guozhong Wang)
Abstract	With the appearance of Time Division-Long Term Evolution (TD-LTE) standard in succession, investigation and measurement of TD-LTE termination performance has been a distinctive bottleneck in the process of its development. So it is a great practical significance to research of TD-LTE termination testing instrument with integrated testing function of RF, physical layer, protocol stack. As an important testing indicator of TD-LTE termination RF conformance, error vector magnitude (EVM) is used to measure modulated signal quality efficiently and integrally, witch is relative offset between symbol before demodulation and ideal symbol at receiver. So far, EVM measurement algorithm in TD-LTE system has not been reasonably considered, especially there is a lack of accurate and clipping measurement. To solve the problem, from the theory of EVM calculation, based on physical uplink share channel, an effective EVM measurement of frequency offset compensation has been proposed. In the proposed algorithm, the reference symbol has been directly frequency offset compensated after hard decision in the demodulation forward module to avoid the influence of frequency error. Simulation and experiment results show that the complexity and resource is enormously reduced, and the measured EVM is precise in the proposed algorithm.
Starting Page	1745
Ending Page	1749
File Size	279281
Page Count	5
File Format	PDF
ISBN	9781467309653
e-ISBN	9781467309646
DOI	10.1109/CISP.2012.6469870
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-16
Publisher Place	China
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Radio frequency Error Vector Magnitude RF Conformance Testing Measurement uncertainty Vectors Time measurement TD-LTE Frequency measurement Uplink Testing
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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