Successive interference cancellation: a back-of-the-envelope perspective

Authors:
Souvik Sen;Naveen Santhapuri;Romit Roy Choudhury;Srihari Nelakuditi
Affiliations:
Duke University;Duke University;Duke University;Univ. of South Carolina
Venue:
Hotnets-IX Proceedings of the 9th ACM SIGCOMM Workshop on Hot Topics in Networks
Year:
2010

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Abstract

Successive interference cancellation (SIC) is a physical layer capability that allows a receiver to decode packets that arrive simultaneously. While the technique is well known in communications literature, emerging software radios are making practical experimentation feasible. This motivates us to study the extent of throughput gains possible with SIC from a MAC layer perspective. Contrary to our initial expectation, we find that the gains from SIC are not easily available in many realistic situations. Moreover, we observe that the scope for SIC gets squeezed by the advances in bitrate adaptation, casting doubt on the future of SIC based protocols.