Paper Info
Title
On the Joint Impact of Hardware and Channel Imperfections on Cognitive Spatial Modulation MIMO Systems: Cramer–Rao Bound Approach
Abstract
This paper investigates the performance of spatial modulation for multiple-input multiple-output underlay spectrum-sharing systems in the presence of three practical deleterious effects: 1) transceiver hardware impairments, 2) outdated channel state information (CSI), and 3) imperfect CSI. In particular, for Rayleigh fading channels, a closed-form expression of the average pairwise error probability and a tight upper bound of the average bit error rate (ABER) are derived. In addition, asymptotic and yet simple approximate expressions are obtained, and consequently insightful discussions are manifested on the impacts of channel and hardware imperfections and on the diversity order. Moreover, explicit exact and approximate expressions for the Cramer–Rao bound are computed for assessing the channel estimation accuracy. Numerical results, which are validated through simulations, show that nonzero bounds of the ABER occur in the high power domain because of the effects of channel and hardware impairments.
Year
DOI
Venue
2019
10.1109/jsyst.2018.2817598
IEEE Systems Journal
Keywords
Field
DocType
Hardware,Channel estimation,MIMO communication,Receivers,Distortion,Transceivers,Transmitting antennas
Cramér–Rao bound,Pairwise error probability,Rayleigh fading,Expression (mathematics),Upper and lower bounds,Computer science,Communication channel,Computer hardware,Channel state information,Bit error rate
Journal
Volume
Issue
ISSN
13
2
1932-8184
Citations 
PageRank 
References 
0
0.34
0
Authors
3
Name
Order
Citations
PageRank
Ali Afana112911.80
Najah Abu Ali29313.87
Salama S. Ikki378354.43