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Design of the PHY Structure of a Voice and Data Transceiver with Security  

Eun, Chang-Soo (Division of Electrical and Computer Engineering, Chungnam National University)
Lom, Sun-Min (Electronics and Telecommunications Research Institute(ETRI))
Lee, Kyoung-Min (Samsung Semiconductor System LSI)
Publication Information
Journal of the Institute of Electronics Engineers of Korea TC / v.43, no.10, 2006 , pp. 46-54 More about this Journal
Abstract
In this paper, we propose a digital transceiver that can overcome the problems which current analog transceivers have. For the proposed transceiver, we assumed a frequency resource that consists of discrete and narrow channels. We also assumed that person-to-group, group-to-group, as well as person-to-person, voice and data communications with moderate security should be devisedand the data rate is 1 Mbps with simultaneous voice and data. Frequency hewing spread spectrum (FH-SS) and differential 8-PSK (D8PSK) were adopted for security reasons and bandwidth constraints, and for the reduction of implementation complexity, respectively. For the carrier and the symbol timing recovery, the structure of the preamble was proposed based on the IEEE 802.11 FHSS frame format to improve detection probability. The computer simulation results and power budget analysis implies that the proposed system can be usedin simple wireless communications in place of such as analog walkie-talkies.
Keywords
Transceiver; FH-D8PSK; Preamble; Discontinuous Narrow-Band Channels;
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