@article{oai:sucra.repo.nii.ac.jp:00013101, author = {Anh, T. Pham and 八嶋, 弘幸}, issue = {10}, journal = {IEICE transactions on fundamentals of electronics, communications and computer sciences}, month = {}, note = {This paper proposes and theoretically evaluates two different schemes of code acquisition for pulse-position modulation (PPM) and overlapping PPM (OPPM) fiber-optic code-division multiple-access (CDMA) systems, namely threshold-based and demodulator-based code acquisition. Single-dwell detector and serial-search algorithm are employed for both schemes. Theoretical analysis is carried out for shot-noise-limited photon-counting receiver. Discussions upon effects of various parameter settings on the performance of code acquisition for PPM/OPPM fiber-optic CDMA systems, such as index of overlap, PPM/OPPM multiplicity, average photon counts per information nat, and darkcurrents, are presented. It is shown that when the threshold is properly selected, the threshold-based code acquisition system offers better performance, in terms of mean number of training frames, than the demodulator-based one., copyright(c)2004 IEICE許諾番号:08RB0011  http://search.ieice.org/index.html, text, application/pdf}, pages = {2692--2701}, title = {On the Code Synchronization of PPM/OPPM Fiber-Optic CDMA Systems(Wide Band Systems)}, volume = {E87-A}, year = {2004}, yomi = {ヤシマ, ヒロユキ} }