Title :
Distortion Analysis of Ultra-Wideband OFDM Receiver Front-Ends
Author :
Ranjan, Mahim ; Larson, Lawrence E.
Author_Institution :
Qualcomm Inc, San Diego, CA
Abstract :
This paper presents a comprehensive analysis of the effect of nonlinearities in ultra-wideband orthogonal frequency-division multiplexing receivers. The statistical properties of a quadrature phase-shift keying baseband signal are utilized to derive closed-form expressions for the power spectral density of cross-modulation, intermodulation, and harmonic distortion products of modulated signals, arising from second- and third-order nonlinearities in the receiver. Both narrowband and wideband jammers are considered. The derived expressions are then used to predict the effect of these nonidealities on the link budget of the system
Keywords :
OFDM modulation; harmonic distortion; intermodulation distortion; quadrature phase shift keying; radio receivers; statistical analysis; ultra wideband communication; OFDM receiver front-ends; closed-form expressions; cross-modulation distortion; distortion analysis; harmonic distortion; intermodulation distortion; link budget; narrowband jammers; nonlinearities effect; power spectral density; quadrature phase-shift keying signal; spectral analysis; statistical properties; ultra-wideband receiver; wideband jammers; Baseband; Closed-form solution; Frequency division multiplexing; Harmonic distortion; Jamming; Narrowband; OFDM modulation; Phase modulation; Phase shift keying; Ultra wideband technology; Cross-modulation; distortion; nonlinear circuit; orthogonal frequency-division multiplexing (OFDM); spectral analysis; statistics; ultra-wideband (UWB);
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2006.882870
