Application of transition place coding in asynchronous time-division multiplexing

A new concept of asynchronous multiplexing of digital signals has been recently proposed by authors. The concept is based on a new format called “Transition Place Coding” (TPC). In this paper the TPC principle has been outlined and the transmission efficiency, the jitter and the error multiplication of the TPC format are analyzed in details. It is shown that the TPC format can be used as an optical line code. Two modifications of the TPC format are presented: a format without transition bit (TPC1) and a format with sliding frame (TPC2). An extensive analysis of the above mentioned characteristics of both TPC1 and TPC2 format was performed. A new asynchronous time‐division multiplexing method based on the TPC formats has been proposed and analyzed with emphasis on an adaptive multiplexing. The TPC multiplex is verified by a computer simulation and by several experimental realizations. Finally, a comprehensive comparison of the TPC multiplex is performed and conditions where their applications appear most desirable are defined. It is shown that the TPC multiplex is attractive for optical fibre communications.