Multi-gigabit communication with hybrid pulse shaping and fractional oversampling

One of the major challenges in the design of new-generation Multi-Gigabit wireless transmission systems without receive equalization is suppression of Inter-Symbol-Interference (ISI). For an optimal receiver performance, transmitted pulses must satisfy the first and second Nyquist criteria. By using a hybrid, digital-analog pulse shaping filter we gain full control over the form of generated pulses. However, an additional design issue is introduced by oversampling technique. Commonly utilized, integer-valued oversampling methods lead to extreme system clock frequencies in multi-gigabit systems. Thus, we present a highly optimized architecture for pulse-shaping with fractional oversampling factors to reduce the system processing speed and power budget.