Java successive interference cancellation carving out mac layer opportunities
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This document discusses successive interference cancellation (SIC) and its potential benefits and limitations from a MAC layer perspective. SIC is a PHY capability that allows a receiver to decode packets that arrive simultaneously. The document finds that SIC provides limited throughput gains unless the interfering signal bits are known beforehand. It also notes that advances in bitrate adaptation reduce opportunities for SIC. It then presents an SIC-aware scheduling algorithm using client pairing and power reduction to better extract gains from SIC, especially in many-to-one transmission scenarios.
Java successive interference cancellation carving out mac layer opportunities
- 1. SUCCESSIVE INTERFERENCE CANCELLATION CARVING OUT MAC LAYER OPPORTUNITIES ABSTRACT: Successive interference cancellation (SIC) is a PHY capability that allows a receiver to decode packets that arrive simultaneously. While the technique is well known in communications literature, emerging software radio platforms are making practical experimentation feasible. This motivates us to study the extent of throughput gains possible with SIC from a MAC layer perspective and scenarios where such gains are worth pursuing. We find that contrary to our initial expectation, the gains are not high when the bits of interfering signals are not known a priori to the receiver. Moreover, we observe that the scope for SIC gets squeezed by the advances in bitrate adaptation. Our analysis shows that interfering one-to-one transmissions benefit less from SIC than scenarios with many-to-one transmissions (such as when clients upload data to a common access point). In view of this, we develop an SIC-aware scheduling algorithm that employs client pairing and power reduction to extract the most gains from SIC. We believe that our findings will be useful guidelines for moving forward with SIC-aware protocol research. ECWAY TECHNOLOGIES IEEE PROJECTS & SOFTWARE DEVELOPMENTS OUR OFFICES @ CHENNAI / TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE CELL: +91 98949 17187, +91 875487 2111 / 3111 / 4111 / 5111 / 6111 VISIT: www.ecwayprojects.com MAIL TO: ecwaytechnologies@gmail.com