Interference Analysis for Optical Wireless Communications in Network-on-Chip (NoC) Scenarios

被引:8
作者
Dehkordi, Jinous Shafiei [1 ,2 ]
Tralli, Velio [1 ,2 ]
机构
[1] Univ Ferrara, Dept Engn, I-44122 Ferrara, Italy
[2] CNIT, I-44122 Ferrara, Italy
关键词
Multiprocessor interconnection networks; optical wireless (OW) communication; interference; error probability; IN-BAND CROSSTALK; COMPONENT CROSSTALK; HOMODYNE CROSSTALK; ARCHITECTURE; BROADCAST; PERFORMANCE; CHANNEL; DESIGN; TECHNOLOGIES; CHALLENGES;
D O I
10.1109/TCOMM.2019.2960339
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
Optical wireless (OW) communications, besides being of great interest for indoor and outdoor applications, have been recently proposed as a powerful alternative to the existing wired and wireless radio frequency (RF) interconnects in a network-on-chip (NoC). Design and analysis of networks with OW links require a careful investigation of cross-link interference, which impacts considerably the efficiency of systems that reuse the same channel for multiple transmissions. Yet, there is no comprehensive analysis of interference for OW NoCs, and the analyses of crosstalk in optical waveguide communications usually rely on synchronous data transmissions. A novel framework for the analysis of on-chip OW communications in the presence of cross-link cochannel interference and noise is proposed, where asynchronous data transmissions are considered. Self-beating of interfering signals is also considered, which was often neglected in previous literature. The bit error probability (BEP) for arbitrary number of interfering sources is derived as a function of signal-to-noise ratio (SNR), interference powers, detection threshold and pulse shaping, using both exact and approximation methods. The proposed analysis can be applied to both noise- and interference-limited cases, and enables a system designer to evaluate reuse distance between links that share the same optical carrier for simultaneous communication in NoCs.
引用
收藏
页码:1662 / 1674
页数:13
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