Many-To-Many Communications via Space-Time Network Coding

—In this paper, the mutual cooperative communication between multiple nodes in a wireless network is efficiently achieved through a novel concept of Space-Time Network Coding (STNC). Unlike the conventional point-to-point cooperative communications between two nodes with N relay nodes deployed in between, simultaneous transmissions from the different N nodes acting as source/relay nodes are performed within 2N time-slots. In particular, the communication is split into two phases: 1) Broadcasting Phase and 2) Cooperation Phase. In the Broadcasting Phase, each node broadcasts its data symbol to the other nodes in the network in its own time-slot, alternatively; while in the Cooperation Phase, in each time-slot, a set of (N −1) nodes transmit while a single destination node receives the other nodes’ transmissions. Specifically, each node employing a selective Decode-and-Forward (DF) cooperative protocol, performs a linear combination of the other nodes data symbols and all the (N ...

• Type: Conference
• Year: 2010
• Where: WCNC
• Authors: Mohammed W. Baidas, Hung-Quoc Lai, K. J. Ray Liu
• Keywords: Computer Networks, Cooperative Communication, Multiple Nodes, Source/relay Nodes, WCNC 2010