Blocking Probability of a DS-CDMA Multi-Hop Virtual Cellular Network

Authors:
Lalla Soundous El Alami;Eisuke Kudoh;Fumiyuki Adachi
Affiliations:
The authors are with Tohoku University, Sendai-shi, 980-8579 Japan. E-mail: soundous@mobile.ecei.tohoku.ac.jp;The authors are with Tohoku University, Sendai-shi, 980-8579 Japan. E-mail: soundous@mobile.ecei.tohoku.ac.jp;The authors are with Tohoku University, Sendai-shi, 980-8579 Japan. E-mail: soundous@mobile.ecei.tohoku.ac.jp
Venue:
IEICE Transactions on Fundamentals of Electronics, Communications and Computer Sciences
Year:
2006

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Abstract

A wireless multi-hop virtual cellular network (VCN) was recently proposed to avoid the large peak transmit power, resulting from the high transmission rates expected for future mobile communication systems. In VCN, calls hop through several links to reach the central port, which is the gateway to the network. With the use of a routing algorithm based on the total uplink transmit power minimization criterion, the total transmit power of all the multi-hop links between the mobile terminal and the central port can be significantly reduced, in comparison with the present (single-hop) cellular network. In this paper, an "on-demand" channel assignment strategy, using the channel segregation dynamic channel allocation (CS-DCA) algorithm, is proposed for multi-hop DS-CDMA VCN. Computer simulation is conducted to evaluate the blocking probability performance and make a comparison between the VCN and the present cellular network.