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Facing the different wireless access networks, this paper has proposed several novel interworking AAA architectures among the 3GPP, WiMax and hotspot wireless LANs. In these architectures, a new entity named standby 3GPP AAA server is defined to cope with the single point failure. Moreover, based on the proposed interworking AAA architectures, a hierarchy AAA scheme is proposed. As a result, the simulation...
The paper concentrates on the trends of integrating cellular network with multi-hop network. A new adaptive mode select mechanism which comprises three parts has been proposed. Based on the normalized reference zone calculated by the mechanism, mode selection between multi-hop mode and cellular mode can be executed. Based on simplified simulation analysis, it is verified that the algorithm we proposed...
In this paper, we introduce a new SLM method to reduce the PAPR in OFDM systems. The orthogonal complex sequences produced according to the phase deviation sequences will be combined with the data sequences by appropriate proportion. Then the new information will be transmitted into the air. The receiver first detects the very complex sequences by using the correlator in the way of blind detection...
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