V. Bharathi

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This paper is a high‑level introduction to the complexities involved in dimension‑ ing and planning of Worldwide interoperability for Microwave Access (WiMAX) net‑ works, with specific emphasis on key WiMAX features and planning techniques that need to be considered for optimal network coverage, capacity, and service require‑ ments. We introduce Fujitsu's(More)
WiMAX networks are intended to cover diverse clutter categories with a higher data range and throughput compared with 2G/3G networks. This paper explains an approach to the analytical dimensioning and possible planning techniques for a cellular network based on IEEE 802.16j technology. The main emphasis is on the methodology used for evaluating the cell(More)
Mobile Ad-hoc network is a collection of two or more node equipped with low power device for data transmission. Many Proactive based Power Aware Routing (PAR) protocol was implemented by many researchers. An optimized power reactive routing protocol describes the concepts of cognitive function and AODV protocol. It ensures that data packet is transferred in(More)
Handwritten document recognition is an area of pattern recognition that has been showing impressive performance in the machine printed text. Handwritten document recognition is an intricate task to various writing styles of individual person. The system first identifies the contour in a handwritten document for segmentation and features are extracted from(More)
4G wireless communication expects to integrate different radio access technologies together to meet wide expectation from users and to support mobility. Call Admission Control (CAC) plays important role in such heterogeneous environment to effectively utilize network resources and to meet user QoS. This paper proposes IP Multimedia Subsystem (IMS) based(More)
H.264 video coding standard supports a broad range of application and providing its security is an important research topic. In this work, a video encryption algorithm for H.264 is proposed, which combines permutation code algorithm with dynamic keys. This work aims at providing more security for H.264 video using dynamic keys and permutation code(More)
Heterogeneous cellular network (HCN) consists of macro, pico and femto cells within the same geographical area. This network utilizes available spectrum efficiently using frequency reuse technique. Due to frequency reuse the HCN network suffers from inter-cellular interference. To reduce interference and to maintain QoS of pico and femto cell users, Time(More)
A Content Addressable Memory is a memory unit which compares input search data against a table of stored data and returns the address of the matching data which is retrieved within single clock cycle. The CAM consumes more power due to parallel search operation and the designing issues of the CAM are to reduce the power consumption, area and to improve(More)
4G communications expects to integrate different radio access networks together to meet wide expectation from users and to support mobility. The different radio networks such as Universal Mobile Telecommunication Systems (UMTS), Worldwide interoperability for Microwave Access (WiMAX), Wireless Local Area Network (WLAN), etc. are collocated in same(More)