To provide the quality and reliability of a fiber optic link over a
wireless link, network nodes in accordance with the present invention
include a link quality management unit, which controls multiple
transmission parameters of a wireless interface in response variable link
conditions. For example, the link quality management unit of one
embodiment of the present invention controls transmission power,
modulation, and error correction. In general, a receiving network node
provides feedback to a transmitting network node. Thus, in many
embodiments of the present invention, the link quality management unit
includes a signal quality detector, which measures a signal quality
value, such as bit error rate, signal to noise ratio, or error vector
magnitude. The measured signal quality is transmitted back to the
transmitting node so that appropriate changes can be made to the
transmission parameters.