High-speed configurable signal generator for access network system test

High performance network over coax (HINOC) is a recently proposed technology which achieves high-performance wide-band duplex data transmission using the vacant frequency resource beyond the existing broadcast TV channel. As HINOC is a novel technology, there exists no testing equipment designed for it yet. In this paper, we designed a high-speed configurable signal generator for HINOC system test. The system of the signal generator is implemented based on NI PXI platform. The HINOC algorithm used to generate HINOC physical layer signal is realized by software, which is convenient for maintenance and upgrade. Transmission, DA conversion and RF upconversion of the signal are performed by hardware (FPGA, NI PXI modules). The signal generator is tested using a HINOC signal analyzer. The test demonstrated that the signal generator meets the HINOC test specification and can provide standard HINOC physical layer signal.