Direct-sequence ultra-wideband over fiber technologies for wireless multiple access communications and sensor networks

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This five-year research program is concerned with the investigation and development of UltraWideband-over-fiber (UWB-over-fiber) technologies for wireless multiple access communications and sensor networks. The proposed theoretical and experimental research will allow us to lead Canadian and international efforts in searching for innovative UWB-over-fiber technologies for broadband wireless access and sensor networks. UWB, approved by the US Federal Communications Commission in 2002 for unlicensed use from 3.1 to 10.6 GHz, has attracted great interest for short-range high-throughput wireless communications and sensor networks. Such short-range wireless networks can operate mainly in an indoor environment in a stand-alone mode, with nearly nonexistent integration into the fixed wired networks or wireless wide-area infrastructure. To offer availability of undisrupted service across different networks and eventually achieve high-data rate access at any time and from any place, a solution is to combine the UWB with state-of-the-art fiber distribution technology, a new area called UWB over Fiber. In this proposed research program, we will investigate and develop UWB-over-fiber technologies based on optically generated UWB signals that are encoded based on direct sequence code division multiple access and the associated optoelectronic components for multiple user broadband wireless communications and sensor networks.