SYNTHESIS AND DEMONSTRATION OF HIGH-SPEED, BANDWIDTH EFFICIENT OPTICAL CODE-DIVISION MULTIPLE-ACCESS (CDMA) TESTED AT 1-GB S THROUGHPUT/

Code division multiple access (CDMA) permits concurrent communication over all virtual channels (in principle), independent of the data rate and the network size. In reality, most CDMA approaches have a bandwid th penalty due to the code length and a loss penalty due to the broadc asting required by CDMA. Both of these penalties can be reduced or ame liorated by means of multi-attribute coding. Matrices constructed from relatively inefficient (0, 1) pulse sequences are suitable multi-attr ibute non-coherent CDMA codes which are both bandwidth and broadcast e fficient. We exhibit a novel approach to synthesizing matrix CDMA code s, develop a 4 x 4 physical model, and demonstrate concurrent communic ation experimentally at concurrent data rates of 100-, 150-, and 250 M b/s per port.