Wireless communications is the fastest growing segment of the communications industry. Everyone wants the quality of services anytime & anywhere. Wireless networks can integrate various heterogeneous radio access technologies as GSM, WLAN, Wimax etc. WiMAX is an IP based, wireless broadband access technology that provides performance similar to 802.11/Wi-Fi networks with the coverage and QOS (q...

In this paper, adaptive channel management approach fuzzy neural networks in heterogeneous wireless networks (ACM-FNN) is presented to efficient resource allocation, and admission control schemes are needed to guarantee quality-of-service (QoS) for differentiated services. The channel management in a two-tier such as micro cell or macro cell wireless networks. Effective reliability and efficien...

Next generation wireless networks are expected to be heterogeneous consisting of several wireless technologies including, but not limited to, UMTS, GPRS, Satellite and WLAN networks. These networks provide bandwidths that range from tenth hundreds of Kbits/sec provided by technologies such as GPRS, to tens of Mbits/sec provided by Broadband wireless LANs such 802.11a. Here we study the problem ...

Wireless OFDMA networks enable new and exciting applications but also pose significant technical challenges due to the need for decentralized control, dynamic topology and the characteristics of the wireless channel. Cooperative cross-layer design is a promising method to satisfy the network requirements. In wireless OFDMA networks working in an ad hoc model, link asymmetry exists because of th...

Wireless sensor networks are often located in areas where access to them is difficult or dangerous. Today, in wireless sensor networks, cluster-based routing protocols by dividing sensor nodes into distinct clusters and selecting local head-clusters to combine and send information of each cluster to the base station and balanced energy consumption by network nodes, get the best performance ...

of Dissertation Presented to the Graduate School of the University of Florida in Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy CAPACITY ANALYSIS AND CROSS-LAYER PROTOCOL DESIGN IN WIRELESS NETWORKS By Pan Li August 2009 Chair: Yuguang Fang Major: Electrical and Computer Engineering Today we have witnessed the proliferation of wireless networks including wireless...

With the rapid growth of wireless access networks, various providers offer their services using different technologies such as Wi-Fi, Wimax, 3G, 4G and so on. These networks compete for the scarce wireless spectrum. The spectrum is considered to be a scarce resource moderated by the spectrum allocation regulatory (“regulatory” for short) which is the governance body aiming to maximize the socia...

the intelligent transportation system (its) provides wireless and mobile communication between vehicles and infrastructure to improve the safety of transportation and make the journey more enjoyable. this system consists of many fixed and mobile nodes (vehicles, trains, vessels, air planes), wireless and wired telecommunication technologies to exchange information between mobile nodes or betwee...