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Beamforming OFDM Performance Under Joint Phase Noise and I/Q Imbalance.
- Source :
- IEEE Transactions on Vehicular Technology; May2016, Vol. 65 Issue 5, p2978-2989, 12p
- Publication Year :
- 2016
-
Abstract
- Phase noise (PHN) and in-phase/quadrature (I/Q) imbalance are two major radio-frequency (RF) impairments in directconversion wireless transceivers. Beamforming and orthogonal frequency-division multiplexing (OFDM) schemes have been adopted in broadband wireless standards due to their significant performance gains. In this paper, we analyze the impact of joint I/Q imbalance and PHN on beamforming OFDM direct-conversion transceivers. We derive an exact normalized-mean-square-error expression (NMSE) and examine several special and asymptotic cases to gain insights. One such insight is that, asymptotically, for both large signal-to-noise ratio (SNR) and the beamforming array size, the PHN and I/Q imbalance effects become decoupled. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00189545
- Volume :
- 65
- Issue :
- 5
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Vehicular Technology
- Publication Type :
- Academic Journal
- Accession number :
- 115391037
- Full Text :
- https://doi.org/10.1109/TVT.2015.2436698