Joint phase noise estimation and data detection in coded multi-input-multi-output systems
Artikel i vetenskaplig tidskrift, 2014
The problem of joint oscillator phase noise (PHN) estimation and data detection for multi-input multi-output (MIMO) systems using bit-interleaved-coded modulation is analysed. A new MIMO receiver that iterates between the estimator and the detector, based on the expectation-maximisation (EM) framework, is proposed. It is shown that at high signal-to-noise ratios, a maximum a posteriori (MAP) estimator can be used to carry out the maximisation step of the EM algorithm. Moreover, to reduce the computational complexity of the proposed EM algorithm, a soft decision-directed extended Kalman filter-smoother (EKFS) is applied instead of the MAP estimator to track the PHN parameters. The numerical results show that by combining the proposed EKFS-based approach with an iterative detector that employs low-density parity check codes, PHN can be accurately tracked. The simulations also demonstrate that compared to the existing algorithms, the proposed iterative receiver can significantly enhance the performance of MIMO systems in the presence of PHN.
MIMO receiver
MIMO communication
oscillators
MAP estimator
soft decision-directed extended Kalman filter-smoother
maximum a posteriori
iterative methods
EM algorithm
radio receivers
expectation-maximisation algorithm
interleaved codes
Kalman filters
PHN estimation
expectation-maximisation
data detection
phase noise
iterative receiver
bit-interleaved-coded modulation
coded multi-input-multi-output system
EKFS-based approach
low-density parity check code
maximum likelihood estimation
signal-to-noise ratio
parity check codes
joint oscillator phase noise estimation
Författare
Arif Onder Isikman
Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk
Hani Mehrpouyan
Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk
Ali Arshad Nasir
Australian National University
Alexandre Graell i Amat
Chalmers, Signaler och system, Kommunikation, Antenner och Optiska Nätverk
Rodney A. Kennedy
Australian National University
IET Communications
1751-8628 (ISSN) 1751-8636 (eISSN)
Vol. 8 7 981-989Ämneskategorier
Kommunikationssystem
DOI
10.1049/iet-com.2013.0730