Cooperative Communications for Wireless Ad Hoc and Sensor Networks
International Journal of Distributed Sensor Networks
e concept of cooperative communications for wireless ad hoc and sensor networks (WAHSNs) has recently attracted considerable attention. Different users or nodes in a WAHSN share resources to create collaboration through distributed transmission, which can signi�cantly improve the performance of WANSNs. us, the problem that how relay nodes in the network cooperate with each other is the main subject in this special issue. e authors have focused on relay cooperation models based on the network
... coding, spectrum allocation, and models with space-time code, and so forth. e paper "An efficient reliable communication scheme in wireless sensor networks using linear network coding, " by J. Wang et al., addresses the modeling and design of linear network coding (LNC) for reliable communication against multiple failures in wireless sensor networks (WSNs). e proposed deterministic LNC scheme RDLC can signi�cantly improve the network throughput. e authors also investigate the potential of random linear code RRLC for providing reliable communication in WSNs. In the paper "Network coded wireless cooperative multicast with minimum transmission cost" by X. Wang et al., the authors explore the problem of minimum cost wireless cooperative multicast by using network coding. e authors propose a network coded hybrid source and cooperative exchange scheme to determine when to stop the source sending and start the exchange process, so as to minimize the total transmission cost. e paper "Cooperative transmission in cognitive radio ad hoc networks, " by J. Jia S. Zhang, investigates a cooperative transmission scheme to address the spectrum heterogeneity issue in cognitive radio ad hoc networks (CRAHNs) to improve the efficiency of spectrum utilization and the performance of cognitive radio networks. In particular, the authors describe several types of cooperative transmission and formulate a new resource allocation problem with joint relay selection and channel allocation. e paper "Towards aid by generate and solve methodology: application in the problem of coverage and connectivity in wireless sensor networks, " by P. R. Pinheiro et al., investigates the novel Generate and Solve (GS) methodology to solve the problem of coverage and connectivity in wireless sensor networks. e paper "Low-complexity decoding algorithms for distributed space-time coded regenerative relay systems, " by C. Zhang H. Yin, examines decoding structure for distributed space-time coded regenerative relay networks. Given the possible demodulation error at the regenerative relays, the authors provide a general framework of error aware decoder, where the receiver exploits the demodulation error probability of relays to improve the system performance. e authors also propose two low-complexity decoders. e paper "Integrated extensible simulation platform for vehicular sensor networks in smart cities, " by X. Tang et al., presents an integrated extensible simulation platform BHU-VSim for vehicular sensor networks (VSNs), which aims to support general simulation environment for typical vehicular applications in smart cities. And, as an initiate attempt, their platform provides signi�cant improvement of VSNs� simulations.