Mazin Musa Daoud Abdelrahim2021-07-282021-07-282021-07http://hdl.handle.net/123456789/16565M.S.C In partial Fulfillment Requirements for the Degree of Master of Science of Data Communication Networks.ABSTRACT This work aims to simulate and analyze wireless transmissions in MATLAB from new IEEE 802.11ac standard, also known as VHT ( Very High Throughput ), and IEEE802.11ad also known as DMG (Directional Multi Gigabyte), approved in 2012-2013. Its will solve heavy zones isuues and give a clearly study in physical layer .and we used a simulation model by matlab program . and we have a good comparative result lead to which best on coverage and which is have high reliability in physical layer .CommunicationStudy in physical layer for Comparative Between WLAN releases IEEE802.11 ac & adThesis