Abstract
This paper provides guidelines for Wireless ATM (WATM) link dimensioning and coding parameters optimisation subject to meeting specified Quality of Service (QoS) requirements. It takes into consideration a comprehensive set of coding as well as teletraffic issues: (1) effects of retransmissions of erroneous packets using Automatic Repeat Request (ARQ) protocols, (2) modulation efficiency (3) Forward Error Correction (FEC) redundancies, and (4) effect of traffic burstiness on loss and delay. Simulations are used to derive Bit Error Rate values for a range of modulation efficiency and FEC Code Rate parameters. These parameters are then optimized to obtain maximal efficiency. We discover that adaptive modulation, where modulation efficiency is dynamically optimized, provides significant efficiency gains. In fact, we demonstrate that in many practical situations, optimal adaptive modulation together with or even without ARQ retransmission in the absence of FEC provides better efficiency and/or QoS than the same system with FEC.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
