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Phase Noise Effect on MIMO-OFDM Systems with Common and Independent Oscillators

X. M. Chen ; H. Wang ; W. Fan ; Y. N. Zou ; A. Wolfgang ; Tommy Svensson (Institutionen för elektroteknik, Kommunikationssystem) ; J. Luo
Wireless Communications & Mobile Computing (1530-8669). (2017)
[Artikel, refereegranskad vetenskaplig]

The effects of oscillator phase noises (PNs) on multiple-input multiple-output (MIMO) orthogonal frequency division multiplexing (OFDM) systems are studied. It is shown that PNs of common oscillators at the transmitter and at the receiver have the same influence on the performance of (single-stream) beamforming MIMO-OFDM systems, yet different influences on spatial multiplexing MIMO-OFDM systems with singular value decomposition (SVD) based precoding/decoding. When each antenna is equipped with an independent oscillator, the PNs at the transmitter and at the receiver have different influences on beamforming MIMO-OFDM systems as well as spatial multiplexing MIMO-OFDM systems. Specifically, the PN effect on the transmitter (receiver) can be alleviated by having more transmit (receive) antennas for the case of independent oscillators. It is found that the independent oscillator case outperforms the common oscillator case in terms of error vector magnitude (EVM).



Denna post skapades 2017-11-30. Senast ändrad 2017-11-30.
CPL Pubid: 253451

 

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Institutioner (Chalmers)

Institutionen för elektroteknik, Kommunikationssystem

Ämnesområden

Kommunikationssystem

Chalmers infrastruktur