Chun-Qing Wu

To reduce the frame error rate of polar-based information reconciliation (IR) scheme with high reconciliation efficiency, we propose the Shannon-limit approached (SLA) IR scheme, in which the block checked decoder of polar code is proposed to determine the error sub-blocks in the forward reconciliation and the errors are corrected in the acknowledgment reconciliation. And the experimental results show that the SLA IR scheme reduces the $\varepsilon$-correctness to $10^{-8}$ and improves the efficiency to better than 1.091 with the IR block size of 128Mb. Otherwise, the SLA IR scheme reaches the efficiency of 1.055 with the quantum bit error rate (QBER) of 0.02, when the block length reaches to 1Gb, which is hundred times larger than the state-of-art implemented polar codes-based IR schemes and further reduce the finite length effect.