Abstract

Wireless networking presents challenges that are different from those of tethered networks in several significant ways. High error rates and constantly varying channels are characteristic of mobile communications. Additionally, new constraints are imposed, including limited energy supplies, and the need for portability. A system for wireless communication using code division multiple access (CDMA), and spread spectrum (SS) modulation, is presented. CDMA has the advantage of not requiring centralized control. Through the use local coordination only, "collisions" may be completely avoided. By using automatic power control in conjunction with spread spectrum modulation, an energy efficient, as well as spectrum efficient, system can be created which is capable of simultaneously providing high bandwidth and low latency communications. The primary focus of this research is to simulate the performance of large-scale spread spectrum networks. A simulator, SSNetSim, is described, which allows the simulation of signal to noise ratios (SNR), throughput, latency, and power consumption. The simulator takes into account parameters such as number of stations, station

Citations