國立臺灣大學電機工程學系Chen, Kwang-ChengKwang-ChengChen2006-09-272018-07-062006-09-272018-07-061994http://ntur.lib.ntu.edu.tw//handle/246246/20060927122756539202High speed indoor diffused infrared wireless transmission is greatly needed for data and multimedia applications. We investigated the error rate performance of OOK (on off keying), NRBI (nonreturn- to zero with bit insersion), M-ary PPM (pulse position modulation), and two novel coded direct detect modulations, DCGPPM (differentially coded and guarded P P M ) and MRLC (modified run length code), by adopting representative channel modeling from measurements and simulations. Practical implementation issues have been further considered. Fkom our results, we suggest DCGPPM at 10M bps, 4-ary PPM or DCGPPM at 20M bps, OOK or NRBI at 40Mbps, and MRLC at 100M bps, for the base- band direct detect transmission of indoor wireless opt i c a l transmission.application/pdf537131 bytesapplication/pdfzh-TWjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/20060927122756539202/1/1994-94.pdf