標題: Fiber-optic subcarrier multiplexed CDMA local-area networks for subband image transmission
作者: Chang, PR
Chang, CC
交大名義發表
電信工程研究所
National Chiao Tung University
Institute of Communications Engineering
公開日期: 1-十二月-1996
摘要: This paper investigates the application of subcarrier multiplexed code-division multiple-access (CDMA) techniques to image transmission over fiber-optic local-area networks (LAN's), In the hybrid scheme, CDMA is used to suppress the interference caused by the laser nonlinearity in the subcarrier multiplexing (SCM) fiber-optic communication systems, Likewise, the SCM scheme is able to increase the channel data rate of CDMA systems, This hybrid system combines the advantages of both schemes and is particularly well suited to subband coding that divides the image information into multiple parallel data streams using an analysis filter bank, each of which is transmitted via a unique subcarrier-code pair, where the spreading code and subcarrier frequency correspond to the image and one of its subbands, respectively, This hybrid scheme also allows more than one image to be transmitted and be accessed simultaneously at the same channel bandwidth, in which each image is assigned a particular spreading code added to its digital data modulating the subcarrier. After transmission, each received signal is independently recovered at a high-Q surface acoustic wave (SAW) receiver with the matching subcarrier-code pair, Other concurrent signals are rejected by the SAW, Then, all the recovered subbands are reassembled by a synthesis filter bank into a close reproduction to the original image, In this paper, the image quality of subband image transmission via CDMA/SCM fiber-optic channels is evaluated and examined.
URI: http://dx.doi.org/10.1109/49.545709
http://hdl.handle.net/11536/912
ISSN: 0733-8716
DOI: 10.1109/49.545709
期刊: IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS
Volume: 14
Issue: 9
起始頁: 1866
結束頁: 1878
顯示於類別:期刊論文


文件中的檔案:

  1. A1996VX46200020.pdf