Measurement Methods for Estimating the Error Vector Magnitude in OFDM Transceivers (2017)
Abstract / truncated to 115 words
The error vector magnitude (EVM) is a standard metric to quantify the performance of digital communication systems and related building blocks. Regular EVM measurements require expensive equipment featuring inphase and quadrature (IQ) demodulation, wideband analog-to-digital converters (ADCs), and dedicated receiver algorithms to demodulate the data symbols. With modern high data rate communication standards that require high bandwidths and low amounts of error, it is difficult to avoid bias due to errors in the measurement chain. This thesis develops and discusses measurement methods that address the above-described issues with EVM measurements. The first method is an extension of the regular EVM, yielding two results from a single measurement. One result equals the regular EVM result, whereas ... toggle 13 keywordsEVM – noise power ratio – transmitter impairments – nonlinearity – iq mismatch – phase noise – power amplifiers – swept-tuned spectrum analysis – power spectral density – signal-to-noise and distortion ratio – SWEEPR – EPR – SLIC-EVM
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