Spatial Modulation in MIMO Cognitive Radio Networks with Channel Estimation Errors and Primary Interference Constraint

被引：2
作者：
Afana, Ali [1 ]
Ngatched, Telex M. N. [1 ]
Dobre, Octavia A. [1 ]
Ikki, Salama [2 ]
机构：
[1] Mem Univ Newfoundland, Fac Engn & Appl Sci, St John, NF A1B 3X5, Canada
[2] Lakehead Univ, Fac Engn, Thunder Bay, ON P7B 5E1, Canada
来源：
2015 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM) | 2015年
关键词：
Cognitive radio; spatial modulation; MIMO networks; system performance; SHIFT KEYING MODULATION; PERFORMANCE ANALYSIS;
D O I：
10.1109/GLOCOM.2015.7417481
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper studies the use of spatial modulation (SM) in multiple-input multiple-output (MIMO) cognitive radio networks considering the primary receiver interference constraint and the maximum transmit power of the secondary transmitter. In particular, we investigate the effect of estimation errors on the secondary system performance, where a closed-form expression is derived for the average pairwise error probability ((PEP) over bar) in Rayleigh fading environments. Based on this (PEP) over bar expression, a tight upper bounded average bit error probability is obtained using the union bound formula. In addition, an asymptotic analysis is conducted and simple approximate expressions are derived to get useful insights on the system diversity and estimation errors' effects. Numerical results, which are validated through simulations, show that the SM is robust against estimation errors.
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页数：6
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