The course gives a detailed description for wireless communications systems. it includes the cellular concept and system design fundamentals: frequency reuse, interference and system capacity. it also depicts the radio propagation and large-scale path loss, Small-scale fading and multipath propagation: Doppler shift, mobile multipath channel parameters such as coherence bandwidth and coherence time. it summarizes the GSM architecture with the diversity techniques and diversity combining, Spread spectrum communication techniques. Multiple access techniques: TDMA, FDMA, CDMA, SDMA in the light of Current and future wireless standards.