Thursday, April 8, 2010

Time-Hopping sequence

In order to distinguish the multi user channels, using the Time-Hopping sequence to control the transmission of pulse. And this paper proposed common-private time-hopping allocation method which adopts handshake protocol. Based on the different links (discount wedding dresses ), this paper proposed a series of resources allocation algorithm to improve and perfect the resources allocation policies.Based on the resources allocation algorithm, this paper proposes a cheap wedding gown dresses based Rate-Adaptive Time Hopping (RATH) MAC protocol with a guarantee of bit error rate and transmission rate provision. The RATH protocol uses common-private method to allocate time hopping code, and finally form multi-users channel access mechanism. According to 12hot cheap prom dresses Signal-to-Interference-and-Noise ratio (SINR) of receiver, RATH determines establishment of each link, which has a variable transmission rate adjusted by the Rate-Adaptive algorithm. And use efficient discount wedding dresses mechanism to transmit data. Simulation experiments via NS2 show that RATH is able to significantly enhance performance of the network effective throughputs and transmission delay, with respect to blog new shirts 2010 MAC protocols.
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