Direct Sequence Spread Spectrum Technique for Multi-User Communication System Application

Wireless communication via direct sequence spread spectrum (DSSS) was first experimented in the late 1800's as a low probability detection (LPD) communication technique for military application; it was used by the military to embed transmitted secret messages below the noise floor to prevent detection and interception.However, DSSS has also found application in the non-military communication systems and has been widely used in the existing wireless communication standards. This paper investigates the performance of DSSS from the point of view probability of for DSSS signals based on the Bit Error using DSSS Spread with the number of users while chips per bits are fixed as well as various chips per bit and fixed users.Monte Carlo method using MATLAB V. 2019a is used to simulate the behavior of communication systems that use the binary phase shift keying (BPSK).