ECE487 Study Guide - Quiz Guide: Distributed Coordination Function, Microsecond, Wireless Lan

• School: University of Alberta
• Department: Electrical and Computer Engineering
• Course: ECE487

Document Summary

Your last name: ____________________ your fist name: _____________________ Due: thursday, march 5, 2020, 4:00 pm, in the assignment box at 2nd floor - pedway between ice and etlc: give manchester code for the following data. (4 point) Winter 2020: (16 points) consider a wireless lan consisting of one access point and three stations: Stations a, b, and c. all the stations can hear each other. Data frame to be sent to the access point. The access point does not have data frame to be sent. Distributed coordination function, which is based on csma-ca, is implemented. At time instant 0 microsecond, the channel becomes idle, and the three stations start to contend for the channel, with contention window being the initial contention window, i. e. , [0, 31]. At time instant 0 microsecond, the three stations pick up random backoff timers as 10, 30, and 30, respectively. Assume difs=50 microseconds; sifs=10 microseconds; a backoff time slot=20 microseconds;