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CDMA2000 lxEV-DO is a code division multiplex cellular system and requires that the terminals search the PN code sequences of the base station (BS) during the initial acquisition stage. The exclusive hardware is frequently used for initial acquisition due to its heavy computational complexity. However, in software defined radio (SDR) terminals, initial acquisition has to be processed by software using...
In this paper, we present a multihop mobile communications system utilizing fixed relay stations to enhance the coverage of the service area. A multihop mobile communications system was originally proposed as a system in which only mobile stations relay communication between other mobile stations and a base station to solve the problem of poor coverage expected in a future cellular system. In the...
In pico-cell architecture, although utilizing a simple base station and a simplified allocation design help to reduce bit cost, frequency channel interference between/among adjacent cells becomes a serious problem. The pico-cell system is supposed to be used mainly for packet-based communication and the carrier to interference power ratio (C/I) degradation leads to poor network performance. To overcome...
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