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This paper, proposes a Radio Network Planning for Fixed WiMax Network for Dhaka City. To develop the plan a cell radius of 400 meter is assumed. For the justification of this assumption several numbers of experimental analyses are done. Two experiments are executed to know the data speed with respect to the distance both for uplink and downlink communication. Another two experiments are executed for...
Next generation wireless networks will be heterogeneous, where several primary users (PU e.g. licensed users) and secondary users (SU e.g. unlicensed users) can operate in the same dynamic and reconfigurable networks at a given time. The major challenge in this heterogeneous radio environment is to enable the coexistence between PU and SU which will further improve the efficient use of radio spectrum...
Implementation of partially-parallel (Low-Density Parity-Check) LDPC decoders using unstructured random matrices is very complex and requires huge hardware resources. To alleviate the complexity and minimize resource requirements, structured LDPC matrices are used. This paper presents a novel technique for constructing a multi-level Hierarchical Quasi-Cyclic (HQC) structured matrix for LDPC decoders...
As a promising broadband wireless technology, WiMAX has many salient advantages over such as: high data rates, quality of service, scalability, security and mobility. Many sophisticated authentication and encryption techniques have been embedded into WiMAX but it still facing a lot of challenging situations. This paper shows different security vulnerabilities found in IEEE 802.16e and gives possible...
Wireless technology is the fastest growing segment of the modern communication industry. The IEEE 802.16e standard, commonly known as mobile WiMAX, is the latest wireless technology that has promised to offer Broadband Wireless Access over long distance. The concept of OFDM is used in WiMAX to obtain high data rate in addition to reducing the effects like inter symbol interference and inter channel...
The emergence of WiMAX has attracted significant interests from all fields of wireless communications. WiMAX has been tipped to bring a revolution in the way where broadband services have been used today; those have been strengthened by the optimization of RF. The systematic investigation to establish facts of necessary modification about the theory for smooth optimization is targeted. This paper...
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