Spread spectrum communications handbook (revised ed.)
Spread spectrum communications handbook (revised ed.)
MACAW: a media access protocol for wireless LAN's
SIGCOMM '94 Proceedings of the conference on Communications architectures, protocols and applications
Digital modulation and coding
CDMA: principles of spread spectrum communication
CDMA: principles of spread spectrum communication
A novel solution to interconnect FieldBus systems using IEEE wireless LAN technology
Computer Standards & Interfaces
Spread Spectrum Systems: With Commercial Applications
Spread Spectrum Systems: With Commercial Applications
Multi-Carrier Digital Communications: Theory and Applications of Ofdm
Multi-Carrier Digital Communications: Theory and Applications of Ofdm
Single and Multicarrier Modulation: For Personal Communications, Wlans and Broadcasting
Single and Multicarrier Modulation: For Personal Communications, Wlans and Broadcasting
Wireless Communications: Principles and Practice
Wireless Communications: Principles and Practice
OFDM Wireless LANs: A Theoretical and Practical Guide
OFDM Wireless LANs: A Theoretical and Practical Guide
CDMA-based MAC protocol for wireless ad hoc networks
Proceedings of the 4th ACM international symposium on Mobile ad hoc networking & computing
Building Robust Wireless LAN for Industrial Control with DSSS-CDMA Cellphone Network Paradigm
RTSS '05 Proceedings of the 26th IEEE International Real-Time Systems Symposium
Fundamentals of wireless communication
Fundamentals of wireless communication
Applying the ZigBee™ and wireless sensors to monitor the efficiency of workflow
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
A framework for the safe interoperability of medical devices in the presence of network failures
Proceedings of the 1st ACM/IEEE International Conference on Cyber-Physical Systems
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Wireless LAN for Industrial Control (IC-WLAN) provides many benefits, such as mobility, low deployment cost, and ease of reconfiguration. However, the top concern is robustness of wireless communications. Wireless control loops must be maintained under persistent adverse channel conditions, such as noise, large-scale path loss, fading, and many electromagnetic interference sources in industrial environments. The conventional IEEE 802.11 WLANs, originally designed for high bandwidth instead of high robustness, are therefore inappropriate for IC-WLAN. A solution lies in the Direct Sequence Spread Spectrum (DSSS) technology: By deploying the largest possible processing gain (slowest bit rate) that fully exploits the low data rate feature of industrial control, much higher robustness can be achieved. We hereby propose using DSSS-CDMA to build IC-WLAN. We carry out fine-grained physical layer simulations and Monte Carlo comparisons. The results show that DSSS-CDMA IC-WLAN provides much higher robustness than IEEE 802.11/802.15.4 WLAN, so that reliable wireless industrial control loops become feasible. We also show that deploying larger processing gain is preferable to deploying more intensive convolutional coding. The DSSS-CDMA IC-WLAN scheme also opens up a new problem space for interdisciplinary study, involving real-time scheduling, resource management, communication, networking, and control.