A RB-HARQ reliability-based hybrid automatic repeat request scheme based on polar codes is proposed.Different from the conventional RB-HARQ scheme,this proposed scheme is based on the construction and decoding of polar codes,the least reliable bits are recoded at the transmitter,and the receiver implements joint decoding in the way of incremental freezing,such that the transmission number is decreased and the performance and throughput of system both improved as compared with the conventional way.To enhance the practicability of the RB-HARQ scheme,a simple compression algorithm based on polar codes is designed for feedback link from the three angles of pre-selection,packet-segment and precedence of retransmission,thus reducing the size of feedback package effectively.
polar codesRB-HARQjoint decodingfeedback link compression
NETL
NSTL
万方数据
维普
