Optimized QAM transmission

摘要

Systems and methods to optimize QAM transmission are provided. In some implementations, a QAM transmitter can operate to optimize QAM transmissions by reducing high peak signals levels via a QAM subgroup inversion. In additional implementations, systems and methods can provide for a QAM transmitter to optimize QAM transmissions by applying a recursive inversion process of QAM blocks to minimize peak output. In still further implementations, systems and methods can provide for a QAM transmitter to optimize QAM transmissions by suppressing QAM subgroups in a circular QAM constellation. Optimizing QAM transmission can provide enhancement in power efficiency of active transmission equipment thereby avoiding high peak signal levels and reducing the instances of clipping.

主权项

1. An optimized quadrature amplitude modulation (QAM) transmission system comprising:
an interface operable to transmit QAM symbol data; a transmission module operable to predict a peak power value expected for transmission of a given set of QAM symbol data; and the transmission module further operable to dynamically adjust a subgroup of QAM symbol data based on the predicted peak power value to reduce peak power value used to transmit QAM symbol data below a threshold; wherein the transmission module is operable to dynamically adjust QAM symbol data to reduce the predicted peak power value by delaying QAM symbol data transmission by storing QAM symbol data in a data buffer, a depth of the data buffer being managed by prioritizing transmissions of input data that has been buffered.