COMMUNICATION SYSTEM, COMMUNICATION METHOD, AND PROGRAM

• Main Authors: TOKI SOMA, ISHIBASHI KOJI, ENDO HIDEKI, SHIBATA YU, YATSU RYOTA
• Format: Patent
• Language: English; Japanese
• Published: 13.06.2024
• Subjects: BASIC ELECTRONIC CIRCUITRY; CODE CONVERSION IN GENERAL; CODING; DECODING; ELECTRICITY

To perform more efficient multi-hop communication.SOLUTION: A relay terminal receives an encrypted sequence in which an information sequence is encrypted, and transmits a compressed sequence and a first cyclic redundancy code obtained by applying a compression method based on polar codes with cyclic redundancy check to the encrypted sequence. A destination terminal receives the compressed sequence and the first cyclic redundancy code, and applies a decompression method based on sequential elimination list decoding with cyclic redundancy check to the compressed sequence to obtain an estimated information sequence, which is estimated to be the information sequence. This technique is applicable, for example, to a communication system in which multi-hop communication is performed.SELECTED DRAWING: Figure 1 【課題】より高効率なマルチホップ通信を行う。【解決手段】中継端末は、情報系列が暗号化された暗号化系列を受信して、暗号化系列に対して巡回冗長検査付きPolar符号に基づく圧縮手法を施すことによって求められる圧縮系列および第１の巡回冗長符号を送信する。宛先端末は、圧縮系列および第１の巡回冗長符号を受信して、圧縮系列に対して巡回冗長検査を用いる逐次除去リスト復号に基づく解凍手法を施すことによって情報系列であると推定される推定情報系列を取得する。本技術は、例えば、マルチホップ通信が行われる通信システムに適用できる。【選択図】図１