الفهرس | Only 14 pages are availabe for public view |
Abstract Recently power consumption became a major design constraint. _Battery powered portable applications is.a very obvious reason, but even for applications where the supply is not a major constraint, a low-power solution provides the added benefits of increased reliability and reduced packaging costs. In this thesis a 256-QAM adaptive decision-feedback equalizer (OFE) was taken as a case study. Low power techniques were employed mainly at the algorithmic and architectural levels. The essence of the work lies in the implementation of two versions of architectures for adaptive equalizers. A strength-reduced architecture was developed and compared to a traditional cross-coupled architecture. The special case of a 256-QAM DFE was taken a common benchmark to compare the two possible architectures, mainly from a power perspective, based on actual implementation considerations and actual operating conditions. For prototypmg, an 8-1evel PAM DFE was chosen so as to demonstrate the practical functionality of an adaptive DFE. |