[PDF] Top 20 Protocol design and performance analysis for cognitive cooperative networks with multiple antennas

... delay performance of the proposed cooperative access scheme versus the PU’s arrival rate λ p under perfect CSI and imperfect CSI cases, ...delay performance of the proposed ZF-cooperation scheme ... See full document

... used in the relay transport protocol in MIMO Cognitive Radio Networks. A novel algorithm of singular value decomposition and least-mean-square error (SVD- MMSE) beam forming is proposed. The ... See full document

... theoretical performance analysis of an enhanced BT-COMAC protocol and validated the analytical results via numerical ...eBT-COMAC protocol is based on received SNR values at each candidate ... See full document

... vehicular networks should offer a robust Medium Access Control (MAC) layer protocol that can provide a reliable delivery service to safety-related ...broadcast protocol is ...MAC protocol, ... See full document

... ABSTRACT: Spectrum sharing networks with distributed AF relaying is used to improve the secondary rate and reduce the interference on the primary. In the asymptote of large number of relays optimal power strategy ... See full document

... interference power at the primary receiver is −85.1 dBm when the secondary transmitter is transmitting at 5 mW and is 500 m from the PRx. Determination of the optimal transmitting power and the optimal distance of the ... See full document

... in Algorithm 2. This figure confirms that Algorithm 2 converges after about 11, 13, 15, and 16 iterations for γ = − 2, − 5, − 8, and − 11 dB, respectively. In addition, the normalized throughput increases over the ... See full document

... The process model corresponding to MAC_Controller node is shown in Figure 2 (a). It consists of sense and transmit processes that respectively sense and transmit packets according to the principle stated above. Single ... See full document

... cross-layer design for two-way relaying (TWR) networks with multiple antennas, where two single antenna source nodes exchange information with the aid of one multiple antenna relay ... See full document

... for cognitive radio applications is ...a cognitive radio perspective and challenges associated with spectrum sensing are ...[3]. Cooperative spectrum sensing can effectively improve the sensing ... See full document

... from multiple relays. A study of the role of cooperative relays has been done in [4] to provide and improve secure communication rates through DF strategies in a full-duplex multiple relay network ... See full document

... main performance characteristics of the YMAC protocol, a medium access control protocol for sensor networks (WSN) that uses multiple frequency channels for data ...good ... See full document

... of cooperative relay in CR ...with multiple licensed bands and a CR network consisting of multiple cooperative relay ...Each cooperative relay link consists of a CR transmitter, a CR ... See full document

... drift and offset, it performs poorly when environment factors affect the clock frequency often [30]. Accurate clock drift estimation is the key for providing long-term synchronization since the clock offset is ... See full document

... optimal design for SWIPT in downlink multi-user of orthogonal frequency division multiplexing (OFDM) ...joint cooperative beam forming and energy signal scheme in ...evaluate performance of wireless ... See full document

... cellular networks, where the SUs are the device-to-device (D2D) multicast user equipments and the PU is the cellular ...the performance of both primary and secondary networks into ... See full document

... the cooperative communication protocols are presented: amplify-and-forward protocol, in which the relay amplifies the received signal and retransmit it to the destination and decode-and-forward ... See full document

... Multiple criteria were used to classify clustering methods [74]-[75]. For example, in [74], four clustering methods were underlined based on the availability of the CR and PU loca- tions. First, if the location of ... See full document

... of cooperative relays into a cognitive radio network. Cognitive radio is a potential solution to the growing scarcity of radio spec- trum and the increased demand for wireless ...services. ... See full document

... wireless networks in the ISM bands, such as the coexistence of WiFi ...b/g networks may interfere with IEEE 802.15.4 sensor networks and thereby introduce significant coexistence problems for ... See full document