EVM simulation and analysis in digital transmitter

doi:10.1016/S1005-8885(08)60287-3

Acta Metallurgica Sinica(English letters) ›› 2009, Vol. 16 ›› Issue (6): 43-48.doi: 10.1016/S1005-8885(08)60287-3

• Wireless • Previous Articles Next Articles

EVM simulation and analysis in digital transmitter

TAN Xiao-heng , LI Teng-jiao

College of Communication Engineering, Chongqing University, Chongqing 400044, China

Received:2009-03-12 Revised:1900-01-01 Online:2009-12-30
Contact: TAN Xiao-heng

Abstract

Abstract:

The error vector magnitude (EVM) is extensively applied as a metric for digital transmitter signal quality compliance in modern communication systems. This article is focused on the effects of local oscillator (LO) phase noise and nonlinear distortion of power amplifier on EVM. This article contributes to below aspects. First, the relationships between EVM and two effects, LO phase noise and nonlinear distortion of power amplifier, are derived and expressed. Second, to simplify the expression, the third-order intermodulation distortion (IMD3) is used to calculate the EVM. Then, an expression for the EVM is derived based on the digital transmitter model that considers local oscillator phase noise and nonlinear distortion of power amplifier. Finally, the math formula of bit error rate (BER) versus EVM is given which can be easier and more useful to predict BER, according to analysis of the relationship between EVM and signal to noise rate (SNR), inspired by the works of Rishad, Md. Shahriar and AHM, 2006. Simulations are carried out to display the performance of EVM based on these relationships.

Key words:

power amplifiers;EVM;phase noise;nonlinear distortion;IMD3

TAN Xiao-heng , LI Teng-jiao. EVM simulation and analysis in digital transmitter[J]. Acta Metallurgica Sinica(English letters), 2009, 16(6): 43-48.

References

1. Hassun R, Flaherty M, Matreci R, et al. Effective evaluation of link quality using error vector magnitude techniques. Proceedings of 1997 Wireless Communications Conference (WCC’97), Aug 11-13, 1997, Boulder, CO, USA. Piscataway, NJ, USA: IEEE, 1997: 89-94

2. Wang A K, Ligmanowski R, Castro J, et al. EVM simulation and analysis techniques. Proceedings of IEEE Military Communications Conference (Milcom’06), Oct 23-25, 2006, Washington, DC, USA. Piscataway, NJ, USA: IEEE, 2006: 1-7

3. Georgiadis A. Gain, phase imbalance, and phase noise effects on error vector magnitude. IEEE Transactions on Vehicular Technology, 2004, 53(2): 443-449

4. Fan X L, Zheng J H, Chen L. EVM testing and analysing in TD-SCDMA. Journal of Chongqing University of Posts and Telecommunications: Natural Science Edition, 2005, 17(2): 156-159 (in Chinese).

5. Liu R F, Li Y M, Chen H Y, et al. EVM estimation by analyzing transmitter imperfections mathematically and graphically. Analog Integrated Circuits and Signal Processing, 2006, 48(3): 257-262

6. Lin F L, Chen S F, Chuang H R. Computer simulation of nonlinear effects of RF power amplifiers based on EVM and ACPR for digital wireless communications. Electronics Letters, 2000, 36(2): 77-79

7. Shafik R A, Rahman S, Islam A R. On the extended relationships among EVM, BER and SNR as performance metrics. Proceedings of the 4th International Conference on Electrical and Computer Engineering (ICECE’06), Dec 19-21, 2006, Dhaka, Bangladesh. Piscataway, NJ, USA: IEEE, 2006: 408-411

8. Lü H H, Cai J M, Gan Z M, et al. Satellite communication system. Beijing, China: Post & Telecom Press, 1994 (in Chinese)

9. Carvalho N B, Pedro J C. Compact formulas to relate ACPR and NPR to two-tone IMR and IP3. Microwave Journal, 1999, 42(12): 70-84

10. Wang X F. How to estimate ACPR index and intermodulation products. International Electronic Elements, 2004(10): 73-76 (in Chinese)

11. Gharaibeh K M, Gard K G, Steer M B. Accurate estimation of digital communication system metrics - SNR, EVM and ρ in a nonlinear amplifier environment. Proceedings of the 64th ARFTG Microwave Measurements Conference, Nov 30-Dec 3, 2004, Orlando, FL ,USA. Piscataway, NJ, USA: IEEE, 2004: 41-44

Metrics

Comments

Copyright © 2020 The Journal of China Universities of Posts and Telecommunications
　 Adress: P.O. Box 231,Beijing University of Posts and Telecommunications,10 Xi Tucheng Road,Beijing 100876,P.R.China　Post Code: 100081
Tel：86-010-62282493　Fax： 86-010-62283461　E-mail: jchupt@bupt.edu.cn
Support by: Beijing Magtech Co.Ltd

[1]	Wang Jie, Hu Xiaoguang, Guan Enyi, Ding Zhushun, Yao Yidong, Li Wen. SFD-AGC algorithm with ADC digitalizing bit fully utilized and stable PAR [J]. JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM, 2017, 24(5): 8-15.
[2]	. Low sampling rate technique based frequency-domain random demodulation for broadband digital predistortion [J]. JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM, 2016, 23(6): 47-52.
[3]	Huang Jing Li Juhu Zhang Haiyan. Performance analyses of OFDM AF relaying system in the presence of phase noise with APS and IPS [J]. JOURNAL OF CHINA UNIVERSITIES OF POSTS AND TELECOM, 2016, 23(5): 1-9.
[4]	WANG Gui-ye, ZOU Wei-xia, WANG Zhen-yu, DU Guang-long, GAO Ying. Cancellation of nonlinear distortion based on integration of FCM clustering algorithm and adaptive-two-stage linear approximation [J]. Acta Metallurgica Sinica(English letters), 2014, 21(3): 18-22.
[5]	. Fully integrated low phase noise multi-band LC-tank voltage controlled oscillator with switched-capacitor resonator [J]. Acta Metallurgica Sinica(English letters), 2012, 19(6): 118-122.
[6]	. Phase noise correction for OFDM signal based on DCT approach and variational inference [J]. Acta Metallurgica Sinica(English letters), 2012, 19(3): 27-32.
[7]	孙玲唐路 Jiang Wei-ping Xia jun. CMOS Ring VCO for UHF RFID Readers [J]. Acta Metallurgica Sinica(English letters), 2010, 17(3): 20-23.
[8]	CAI Meng, ZHANG Ke-feng, ZOU Xue-cheng, LIU Hao. Computationally efficient channel estimation and inter-carrier interference suppression for OFDM communication systems [J]. Acta Metallurgica Sinica(English letters), 2009, 16(6): 17-23.
[9]	Afshin S. Daryoush. Thermal sensitivity of photonic crystal fibers in opto-electronic oscillators [J]. Acta Metallurgica Sinica(English letters), 2009, 16(4): 1-6.
[10]	LI En-ling, WANG Xue, SONG Lin-hong, YUAN Yong-xia, YU Fa-da, LIU Man-cang. Design of 1.9 GHz RF CMOS VCO [J]. Acta Metallurgica Sinica(English letters), 2009, 16(3): 103-107.
[11]	TANG Jing; SHEN Shu-qun. Phase noise approximation analysis for the OFDM system [J]. Acta Metallurgica Sinica(English letters), 2007, 14(3): 95-98.

EVM simulation and analysis in digital transmitter

PDF

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 11

Recommended Articles

Metrics

Comments