METHOD AND APPARATUS USING SOUNDING PPDUS TO PROVIDE RANGE EXTENSION TO IEEE 802.11N SIGNALS

摘要

radio transmitter stream parser for generating a plurality of spatial streams from a digital signal, each of the channel transfer function spatial streams, each comprising the data and the preamble for estimating a plurality of space-time streams by space-time block coder for mapping, spatial expansion of the data matrix is applied to the first data and training symbols used in preamble The channel experienced by the irradiation, and by allowing the matrix to be applied to expand the second training symbols used in the preamble, at least for one of the beam forming to achieve extended range channels of additional dimensions, space-time streams each spatially space for extending mapper-space matrix expansion and enhancement matrix is different He (norm) in at least two orthogonal columns (orthogonal column) to form a complete matrix with -, and the spatially expanded space-time streams of an analog front end for modulating a radio carrier.