TY - JOUR
T1 - On the Joint Impact of Hardware and Channel Imperfections on Cognitive Spatial Modulation MIMO Systems
T2 - Cramer-Rao Bound Approach
AU - Afana, Ali
AU - Abu-Ali, Najah
AU - Ikki, Salama
N1 - Funding Information:
This work was supported by the Roadway Transportation and Traffic Safety Research Center, United Arab Emirates University under Project #31R014-Research CenterRTTSRC-4-2013.
Funding Information:
Manuscript received November 25, 2017; revised January 11, 2018 and February 13, 2018; accepted March 4, 2018. Date of publication April 27, 2018; date of current version May 31, 2019. This work was supported by the Roadway Transportation & Traffic Safety Research Center, United Arab Emirates University under Project #31R014-Research CenterRTTSRC-4-2013. (Corresponding author: Najah Abu-Ali.) A. Afana was with the Faculty of Engineering, Lakehead University, Thunder Bay, ON P7B 5E1, Canada. He is now with the Ericsson, Ottawa, ON, Canada (e-mail:,aafana@lakeheadu.ca).
Publisher Copyright:
© 2007-2012 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - 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systems in the presence of three practical deleterious effects: 1) transceiver hardware impairments, 2) outdated channel state information (CSI), and 3) imperfect CSI.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.
AB - 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systems in the presence of three practical deleterious effects: 1) transceiver hardware impairments, 2) outdated channel state information (CSI), and 3) imperfect CSI.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.
KW - Channel estimation errors
KW - hardware impairments
KW - multiple-input multiple-output (MIMO) networks
KW - outdated CSI
KW - spatial modulation (SM)
KW - system performance
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U2 - 10.1109/JSYST.2018.2817598
DO - 10.1109/JSYST.2018.2817598
M3 - Article
AN - SCOPUS:85046344591
SN - 1932-8184
VL - 13
SP - 1250
EP - 1261
JO - IEEE Systems Journal
JF - IEEE Systems Journal
IS - 2
M1 - 8352133
ER -