Spectrum allocation method for multi-hop cognitive wireless network

• Main Authors: LIU BIN, HUANG DECHANG, WANG ZUOHANG, WANG JIANXU, LIU JUEFU, LIN WEILONG, LI XIAOJUN, YANG YAHUI, LI BO
• Format: Patent
• Language: Chinese; English
• Published: 15.02.2017
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

The invention discloses a spectrum allocation method for a multi-hop cognitive wireless network. The spectrum allocation method is applied to an OFDM (Orthogonal Frequency Division Multiplexing) relay link including a source node, a relay node and a destination node, and each frame is partitioned into two slots with equal periods. The method comprises the following steps: establishing two non-cooperative game models of the two slots respectively according to feature information of a wireless network link; calculating optimal solutions of the non-cooperative game models under an unconstrained condition, namely, an unconstrained optimal user communication rate vector and an unconstrained optimal total transmission power allocation vector; and confirming and outputting an optimal user communication rate vector and an optimal power allocation vector according to the optimal solutions, a user communication rate, and total transmission power of the source node and the relay node or a corresponding relationship betw