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Forward osmosis (FO) is an emerging osmotically driven membrane process, and its applications are becoming diversified. As one important membrane configuration, hollow fiber modules have been applied to some innovative FO processes, e.g., osmotic membrane bioreactor (OMBR). Aside from the inherent concentration polarization (CP) phenomena, new challenges are posed by the coupled concentrating and...
Parallel channel models are common in wireless communication systems. In this paper, we propose an algorithm to maximize the throughput of two independent parallel channels over allowed encoder rate and modem rate constraints by adapting system parameters according to known channel state information. Theoretical results are presented and applied to a hybrid free space optical (FSO)/radio frequency...
Various wireless networks have emerged to meet the growing demand for broadband wireless services. However, wireless services are fundamentally limited in bandwidth because of the scarcity of RF spectral resources. One alternative resource is the optical spectrum that can provide Gbps connectivity for little cost and no interference. This paper addresses the design of joint free space optical (FSO)...
Hybrid free space optical (FSO)/RF communication systems can provide high throughput short range ??lastmile?? connectivity. Since channel conditions are highly variable, adaptive symbol rate and modulation schemes are attractive for this application to make better use of available resources. This paper focuses on the information-theoretic analysis of such FSO/RF systems and introduces an adaptive...
With the proliferation of location dependent applications in sensor networks, localization awareness becomes an essential capability of sensor nodes. Many localization algorithms have been proposed in recent years, in which DV-Hop is the most popular one. Intrinsically, localization is an optimization problem based on various distance/path measures. GA and SA are both widely used approaches toward...
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