An efficient algorithm for simulating error vector magnitude in nonlinear OFDM amplifiers

Yamanouchi, S.; Kunihiro, Kazuaki; Hida, H.

doi:10.1109/cicc.2004.1358754

Cited by 18 publications

(2 citation statements)

References 5 publications

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“…Single tone [15] and two tone [10] signals can be provided for testing products that require modulated signal input. Unfortunately, these methods are inadequate for spread spectrum systems that utilize many subcarriers to increase the bandwidth efficiency.…”

Section: Introductionmentioning

confidence: 99%

Enhanced error vector magnitude (EVM) measurements for testing WLAN transceivers

Acar

Ozev

Redmond

2006

Proceedings of the 2006 IEEE/ACM International Conference on Computer-Aided Design - ICCAD '06

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As wireless LAN devices become more prevalent in the consumer electronics market, there is an ever increasing pressure to reduce their overall cost. The test cost of such devices is an appreciable percentage of the overall cost, which typically results from the high number of specifications, the high number of distinct test set-ups and equipment pieces that need to be used, and the high cost of each test set-up. In this paper, we investigate the versatility of EVM measurements to test the variable-envelope WLAN (Wireless Local Area Networks) receiver and transmitter characteristics. The goal is to optimize EVM test parameters (input data and test limits) and to reduce the number of specification measurements that require high test times and/or expensive test equipment. Our analysis shows that enhanced EVM measurements(optimized data sequence and limits, use of RMS, scale, and phase error vector values) in conjunction with a set of simple path measurements (input-output impedances) can provide the desired fault coverage while eliminating lengthy spectrum mask and noise figure tests

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Section: Introductionmentioning

confidence: 99%

Enhanced error vector magnitude (EVM) measurements for testing WLAN transceivers

Acar

Ozev

Redmond

2006

Proceedings of the 2006 IEEE/ACM International Conference on Computer-Aided Design - ICCAD '06

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“…Yamanouch et al [18] proposed a single tone measurement based technique to estimate EVM for power amplifiers for IEEE 802.11a OFDM systems. Acar et al [19] proposed to use an enhanced EVM measurement technique for both receiver and transmitter testing.…”

Section: Introduction and State-of-the-artmentioning

confidence: 99%

Robust Computation of Error Vector Magnitude for Wireless Standards

Jensen

Larsen

2013

IEEE Trans. Commun.

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The modulation accuracy described by an error vector magnitude is a critical parameter in modern communication systems -defined originally as a performance metric for transmitters but now also used in receiver design and for more general signal analysis. The modulation accuracy is a measure of how far a test signal is from a reference signal at the symbol values when some parameters in a reconstruction model are optimized for best agreement. This paper provides an approach to computation of error vector magnitude as described in several standards from measured or simulated data. It is shown that the error vector magnitude optimization problem is generally non-convex. Robust estimation of the initial conditions for the optimizer is suggested, which is particularly important for a non-convex problem. A Bender decomposition approach is used to separate convex and non-convex parts of the problem to make the optimization procedure simpler and robust. A two step global optimization method is suggested where the global step is the grid method and the local method is the Newton method. A number of test cases are shown to illustrate the concepts.

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CMOS power amplifier design for cellular applications

Kim

2016

RF and Mm-Wave Power Generation in Silicon

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An efficient algorithm for simulating error vector magnitude in nonlinear OFDM amplifiers

Cited by 18 publications

References 5 publications

Enhanced error vector magnitude (EVM) measurements for testing WLAN transceivers

Enhanced error vector magnitude (EVM) measurements for testing WLAN transceivers

Robust Computation of Error Vector Magnitude for Wireless Standards

CMOS power amplifier design for cellular applications

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