Abstract
Hardware emulation of communication channels can speed up the process of estimating the performance of a communication system by a few orders of magnitude compared with traditional software-based estimations. The noise generator can be used as a key component in a hardware-based simulation system, such as for exploring channelA hardware White Gaussian Noise Generator (WGNG) is developed for mobile communication channel emulation in FPGA circuit. High accuracy, fast and low-cost hardware are reached by combining the Box-Muller and Central limit methods Compared to existing methods, the proposed method costs lower power but more area. The architecture and the performance analysis of our AWGN generators are elaborated.A design for a White Gaussian Noise Generator (WGNG) is modified and implemented as a 0.18-μm CMOS digital ASIC for high-speed communication channel emulation. A layout is generated based on a standard digital design flow provided by Canadian Microelectronics Corporation (CMC). This implementation achieves an output rate of 100M samples/sec, which exceeds the speed of the original FPGA implementation by more than four times.