Mobile devices are widely used for a vast range of applications such as mobile phones, personal digital assistant, personal computers, video games console, etc. However, the performance of these devices is restricted by the support of the network and the mobile functionality and efficiency. Current applications require high data rates and global mobility which can be satisfied with the co-existence and handover between newly developed third generation (3G) or Universal Mobile Telecommunication System (UMTS) standard and current second generation (2G) standards including: Global Standards for Mobile (GSM), Digital Cellular System (DCS), and Personal Communication Systems (PCS). Therefore, recent research in wireless communication has shifted towards achieving a multi-standard terminal, which can support efficiently multiple standards including GSM/DCS/PCS/3G.
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