Development of a 16xE1 multiplexer / optical modem with technological innovation

• Grant number: 97/07321-2
• Support Opportunities: Research Grants - Innovative Research in Small Business - PIPE
• Start date: January 01, 1998
• End date: December 31, 2000
• Field of knowledge: Engineering - Electrical Engineering - Telecommunications
• Principal Investigator: Rege Romeu Scarabucci
• Grantee: Rege Romeu Scarabucci
• Company: Asga S/A
• City: Paulínia

Abstract

The development of the 16xE1 Multiplexer/ Optical Modem (MMO 16xE1) will take place in two phases. In phase 1, three studies of innovations to be included in the MMO 16xE1 will be carried out. In phase 2, these and other technological innovations will be implemented in the equipment, the design and production of prototypes, in which they will be the main focus. The MMO 16xE1 is being developed for use in the Primary Optical Route (POR) defined by the Telebrás System. It must, however, meet the specifications of Technical Standard no. 225-540-786 of December 1996, Functional Requirements and Equipment Performance for the Primary Optical Network. The MMO 16xE1 will perform the multiplexing and demultiplexing of up to 16 E1 tributary channels at a speed of 2,048 kb/s, as well as carrying out the conversions of added signals from electrical to optical and vice-versa, enabling communication between the tributary channels by a pair of optical fibers. The main technological innovations to be introduced into the MMO 16xE1 are: 1) measurements of Operational Performance - Measurement of Optical Transmitting Power - Measurement of Optical Reception Power - Measurement of the Optical Interleaving Error Rate; 2) the Introduction of Radial and Ring Structures; 3) managing Failures and the Performance of Optical Interlacing. In particular, an FPGA chip will be developed to measure the error rate with a BIP (Bit Interleaved Parity) code. (AU)