Distributing and transmitting scheme with amplified forwarding power for wireless sensor network of two-hops

The invention discloses an amplifying and transmitting power distribution transmission proposal based on a distributed linear dispersive code. The proposal comprises the steps that: 1) in a two-hop wireless transducer network, a transmitting terminal as an information source node transmits a RTS packet to a potential relay node to perform a reservation request for a channel; 2) each relay node receiving the RTS packet estimates a signal-to-noise ratio of the RTS packet, embeds information of the signal-to-noise ratio into a RTS packet of remote communication, and transmits a reservation channel of the RTS packet to an information sink which estimates the signal-to-noise ratio of the RTS packet from each relay node; 3) the estimated signal-to-noise ratio of the RTS packet of the remote communication is embedded into a CTS packet by the information sink and is returned to the relay node, and is embedded into a CTS packet in local communication and is returned to the information source node after being received by the relay node, so that the information source node, the relay node and an information sink node can understand information of the signal-to-noise ratio of the RTS packets of all channels; 4) an information source calculates optimized transmitting power of the information source to broadcast signals to relays, after a received signal is normalized by the relay node, a structure of the linear dispersive node is formed by adopting an amplifying and transmitting protocol, thereby transmitting the signal to the information sink with the optimized transmitting power; 5) a receiving terminal of the information sink also can calculate transmitting power of the information source and each relay node, and the decoding can be performed by combining the information and adopting maximum likelihood algorithm or sphere decoding algorithm. The proposal sufficiently represents diversity gain of the distributed linear dispersive code.