2011.11.14
Overview
The present invention relates to a time division duplex orthogonal frequency division multiplexing (TDD-OFDM) distributed antenna system (DAS), a base station and a remote access unit (RAU) for the same. More particularly, the base station of the present invention generates a first orthogonal frequency division multiplexing (OFDM) signal by performing an inverse fast Fourier transform on a user downlink signal, a transmitting/receiving enable signal and an input control signal to eliminate the use of a frequency-division multiplexing bandpass (FDM BP) filter bank as in the prior art; the remote access unit of the present invention can switch between a transmitting mode and a receiving mode periodically and perform a clock synchronization with the base station according to the transmitting/receiving enable signal.Category
發明
Patented
13/295,266
US8,942,143B2
Filing Date
2011.11.14Expired Date
2033.10.28Notification
2015.04.24