Contents
APPLICATION OF POWER CONTROL AND CDMA IN ADHOC NETWORKS
by
Shagun Dusad
Anshul Khandelwal
Shirish Mehta
Abstract
Here we present some basic concepts related to CDMA (code division multiple access) and mobile adhoc networks (MANETs). We discuss how CDMA based power controlled MAC (medium access control) protocols can be used to increase the network capacity and throughput. CDMA is relatively new technology in the field of MAC and has its own advantages. In the case of transmission with the fixed power for any destination, the node, transmitting signal, enforces the neighborhood nodes to remain silent for the transmission duration. Thus prevents the reuse of channel. This disadvantage can be alleviated with the use of power controlled MAC protocols. Use of CDMA in MAC protocols allows the multiple simultaneous transmission in the network on the basis of interference level considerations. Some of the issues and design aspects in using CDMA in MAC layer are discussed. Finally, we conclude with some real life applications of adhoc networks.Index Terms:CDMA, Power Control, Adhoc Networks, CSMA/CA, Spread Spectrum, MAC.
