Network parameters are vital ingredients of today’s data communication scenario especially Media access delay, download/upload response time and traffic sent/received .This Paper has taken into consideration the modeling and implementation of Wireless Local Area Network (WLAN) and wired Ethernet network (LAN) based on OPNET simulator 17.5 and evaluated the performance of the WLAN and LAN in a c...

Wireless body area networks (WBANs) in the industrial, scientific, and medical (ISM) bands have been increasingly adopted for various medical applications. Due to the shared nature of the ISM bands, when a WBAN coexists with a wireless local area network (WLAN), performance of WBAN may significantly degrade because of asymmetric attributes between WBAN and WLAN such as transmit power and respon...

The desired characteristic of next generation wireless communication is convergence of various heterogeneous technologies. By integrating heterogeneous technologies user will be provided high data rates, good service and connectivity. In this paper we consider the integration of wireless local area network (WLAN) in 3G network. We evaluate performance of two vertical handoff (VHO) algorithms fo...

In this paper a heterogeneous network model based on the IMS-SIP (session Initiation protocol) with the help of Authentication, Authorization, and Accounting (AAA) protocol that integrates the Worldwide Interoperability for Microwave Access (WiMAX), Universal Mobile Telecommunications System (UMTS) and Wireless Local Area Network (WLAN) technologies is proposed to improve QoS. The proposed Loos...

Wireless LAN access networks show a strong potential in providing a broadband complement to Third Generation (3G) cellular systems. 3G networks provide a wider service area, and ubiquitous connectivity with low-speed data rates as compared to Wireless Local Area Networks (WLANs). WLAN networks offer higher data rate and the easy compatibility to wired Internet, but cover smaller areas. Integrat...

In this paper we reflect evaluation of Wireless Local Area Network (WLAN) standard in a vehicular environment. WLAN based on the IEEE802.11a standard in wireless user community is widespread and well known to ensure wireless communication. This standard can be used indoor environment for stationary and slowly move users. Despite this fact we analysed this wireless communication standard to unde...

In direct-conversion orthogonal frequency division multiplexing (OFDM) receivers, the impact of frequency-dependent I/Q mismatch (IQ-M) with carrier frequency offset (CFO) must be considered. A preamble-assisted estimation is developed to circumvent the frequencydependent IQ-M with CFO. The results of a simulation and an experiment show that the proposed method could provide good estimation eff...

The performance of Wireless Local Area Network (WLAN) is highly dependent on the processes that are implemented in Medium Access Control (MAC) sublayer regulated by IEEE 802.11 standard. In turn, various parameters affect MAC sublayer, most important which number stations network and offered load. With massive growth multimedia traffic, research depending traffic types relevant. this paper, we ...

—This paper explores the next generation of mobile communication system from different perspectives. A user-centric approach to 4G is considered. We envision 4G as a convergence platform where wide-area (cellular) technology, wireless metropolitan area network (WMAN) and wireless local area network (WLAN) will coexist and complete. Legacy systems, their evolution as well as newly developed acce...

With rapid developments of inexpensive small-sized communication devices and high-speed network technologies, the Internet has increasingly become the important medium for a lot of people in daily lives. People can access to a variety of information, data, and services that have been provided through the Internet, in addition to their personal communications. This progress of the Internet utili...