We present a network-coding-aware link adaptationscheme for wireless broadcast transmission, which can achievesignificantly higher throughput compared to schemes whichalways ensure correct decoding by the weakest link receiver.We evaluate the performance for the broadcast phase of a twoway relay channel based on average SNR feedback. If dynamicswitch between the bit-wise XOR network coding scheme andthe generalized multiplicative network coding is allowed, a lessthan 1% throughput loss compared to ideal network coding canbe achieved in most SNR regions, and a less than 6% throughputloss can be guaranteed regardless of link asymmetry. Copyright @ 2013 IEEE. Personal use of this material is permitted. However, permission to reprint/republish thismaterial for advertising or promotional purposes or for creating new collective works for resale orredistribution to servers or lists, or to reuse any copyrighted component of this work in other works must beobtained from the IEEE.QC 20131010