International Journal of Engineering Research

S. P. V. Subba Rao ¹, S. N. Chandrasekhar ¹, D. Vishnu Vardhan ²

Affiliations
1 SNIST, Hyderabad, IN
2 JNTU, Pulivendula, IN

Abstract

Wireless communications has become ubiquitous these days. With the advent of multimedia applications, there is a need for higher bandwidth and faster data rates. A Medium Access Control (MAC) protocol is required for effective utilization of network resources and to transmit multimedia traffic classes with quality of service requirements. In the proposed Dynamic MAC protocol under low load conditions users can access any slots and in high load conditions the owners of the slots have priority to access slots. If the owners are not having any data to transmit the non-owners can access slots. Adaptive Call Admission Control algorithm for multimedia traffic is used to control congestion, which in turn reduces the blocking probability and hence maximizes system capacity. The performance of the proposed protocol is evaluated based on Throughput, Call blocking probability, Capacity.

Keywords

W-CDMA, MAC Protocol, Wireless Networks, Call Blocking Probability, Call Admission Control, Adaptive Power Control, Capacity.

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D. Vishnu Vardhan ¹, K. Soundara Rajan ², Y. Narasimha Murthy ³

Affiliations
1 Department of ECE, JNTU College of Engineering, Pulivendula, Kadapa (Dt), A.P, IN
2 Department of ECE, JNTU College of Engineering, Pulivendula, Kadapa (Dt), A.P., IN
3 Department of Electronics, Sri Saibaba National College (Autonomous), Anantapur, A.P., IN

Abstract

This paper presents the design and development of a low power embedded system for the measurement and monitoring of physiological parameters like body temperature, respiration, blood pressure and ECG. The design is developed around a low power microcontroller MSP430 from Texas Instruments. A wireless sensor module is used to transfer the data from microcontroller to the PC and a graphical user interface (GUI) is developed to display the measured data in the graphical form.

Keywords

Embedded System, Wireless Sensor Network, Zigbee, MSP 430 Microcontroller, ECG, Pulse Rate.

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