Abstract:
PURPOSE: A quantum code design apparatus capable of improving the performance of a quantum error correction code and a method thereof are provided to apply an entangled cubit to the design technique of a CWS(Code Word Stabilized Quantum) code, thereby enabling designing of the quantum error correction code. CONSTITUTION: An analysis part(110) analyzes more than one quantum error generated in a quantum error channel as a binary error using the standard form of a CWS code. A code generation part(120) generates a binary error correction code correcting more than one binary error. A word operator generating part(130) generates more than one word operator of the CWS code using more than one binary error correction code. A code word generating part(140) generates more than one code word including more than one entangled cubit using more than one word operator. [Reference numerals] (110) Analysis part; (120) Code generation part; (130) Word operator generating part; (140) Code word generating part
Abstract:
PURPOSE: A decoding method for a system which uses raptor codes is provided to reduce the system load by reducing the calculation quantity. CONSTITUTION: A variable node remaining after the MP decipher of the raptor codes is established as a set Uv(ST10). The selected guess node and the free variable nodes are composed as a first group(ST20). Rest of the groups except the variable node are obtained(ST30). Two biggest groups are assigned to G1 and G2(ST40). A subgroup G10 or G11 satisfying the equation of the check node is selected(ST50). Group G20 or G21 satisfying the check node equation is selected by using the subgroup G20 about and G21(ST60).
Abstract:
본 발명은 네트워크에서 유저가 목적노드를 공유하는 상대방 유저로부터 전송된 잉여정보를 협력통신을 통해 상기 목적노드로 전송하는 시스템 및 방법에 관한 것으로서, 더욱 상세히는 부호 협력통신 기반하에서 상기 유저가 암호화된 상기 상대방 유저의 잉여정보에 대한 복호화에 실패할 경우에도 상기 상대방 유저의 노드정보를 상기 목적 노드에 전송하도록 하는 프로토콜을 이용함으로써 정보의 불균형을 해소시킬 수 있는 증폭 후 전송을 이용한 부호 협력통신 시스템 및 방법에 관한 것이다. 부호, 협력통신, AF, DF
Abstract:
PURPOSE: A communication method in network including a plurality of communication nodes is provided to restrain the increase of error ratio in case the telecommunication is impossible using a direct path between two communications nodes. CONSTITUTION: The first communications node is instituted as a source node(S11). A communication node in which the channel condition with the source node is good is selected(S12). The node group is set(S13). The node group comprises communication nodes which can communicate with smaller error ratio than standard error. The communication node belong to the node group is set as a target node(S14). The communication of the single relay mode to the target node from the source node is operated using the selected communications node as the relaying node(S15).