Patent ID: 9137784
Filing Date: 2015-09-15
Classification: C07F,H04W

Abstract:
1. A resource distribution method for throughput maximization in a cooperative cognitive SIMO network comprising: step 1: a transmitter of a primary user broadcasts a cooperation request message (CRM), a receiver of the primary user replies a cooperation acknowledge message (CAM), a cognitive base station estimates channel state information in the cognitive SIMO network from the received CRM and CAM, then judges whether the cognitive SIMO network has ability of cooperating with the primary user to achieve a target transmission rate of the primary user or not, if yes, the cognitive base station sends a cooperation confirmation message (CCM) to the primary user and the cognitive SIMO network being accessible to a frequency band licensed to the primary user; and otherwise, the cognitive SIMO network is non-accessible to the licensed frequency band; step 2: the cognitive network receives data of the primary user, comprising: after the transmitter and the receiver of the primary user receive the CCM, the transmitter of the primary user starts to send information data, the cognitive network keeps silent and receives data of the primary user, simultaneously, the cognitive base station and the cognitive users being capable of successfully decoding the data of the primary user decode the data; step 3: the cognitive users send data of themselves and simultaneously relay the data of the primary user, comprising: the cognitive users which successfully decode the data of the primary user spend part of their transmission power α step 4: the cognitive base station eliminates the interference caused by the data of the primary user from the received mixed signals and performs beamforming for the signals after eliminating the interference, according to the combined adjustment of a transmission power vector p=[p