REF Codes: Intermediate Performance Oriented Fountain Codes with Feedback

Jin Shang, Wenjun Xu*, Chia Han Lee, Xin Yuan, Ping Zhang, Jiaru Lin


研究成果: Article同行評審

10 引文 斯高帕斯(Scopus)


In this article, a novel class of fountain codes with feedback, called relative-entropy-based fountain (REF) codes, is proposed. The transmitter of REF codes adapts the degrees of encoded symbols to make the degree distribution at the receiver close to the robust soliton distribution, where the distance between two distributions is measured by relative entropy. The proposed REF codes are shown to achieve excellent intermediate performance over binary erasure channels (BECs), and binary-input additive white Gaussian noise channels (BI-AWGNCs) for both unicast, and multicast scenarios. For multicast, a non-uniform input symbol selection scheme is proposed to enhance the performance of REF codes. Furthermore, since the feedback is imprecise under noisy channels, the concept 'belief' is introduced to improve the reliability of REF codes. Theoretical analysis is performed for the proposed REF codes, with an upper bound, and an approximate lower bound of the intermediate performance of REF codes over BECs derived. Both theoretical analysis, and simulations show that the proposed REF codes outperform the state-of-the-art fountain codes with feedback, in terms of the intermediate performance, with low overhead.

頁(從 - 到)13148-13164
期刊IEEE Transactions on Vehicular Technology
出版狀態Published - 11月 2020


深入研究「REF Codes: Intermediate Performance Oriented Fountain Codes with Feedback」主題。共同形成了獨特的指紋。