Vutukuri, A.Bhattacharya, S.Raj, T.SridharGeetha, V.2020-03-302020-03-302014Lecture Notes in Electrical Engineering, 2014, Vol.284 LNEE, , pp.21-29https://idr.nitk.ac.in/handle/123456789/8268IEEE 802.15.4 is the standard for Low-rate Wireless Personal Area Networks. The CSMA-CA algorithm used in the standard for channel contention causes performance bottlenecks in certain scenarios. We have conducted a performance evaluation of the back-off algorithm with the help of simulations on star networks and identified two parameters which affect the performance of the algorithm - macMinBE and macMaxBE. Further, we have also proposed an enhanced algorithm which involves these two parameters and improves the performance of the back-off algorithm. � 2014 Springer International Publishing Switzerland.Book chapter