Joint Waveform Design and Interference Pre-Cancellation for Time-Reversal Systems

摘要

A base station having an input module for receiving a probe signal sent from a terminal device, and a data processor for generating a signature waveform that is based on channel information derived from the probe signal, identifying data symbols intended to be transmitted to the terminal device, and modifying the data symbols based on the channel information. The modification of the data symbols is designed to reduce inter-symbol interference when the data symbols are received by the terminal device. The data processor generates a downlink signal based on the modified data symbols and the signature waveform. The base station generates a wide-band a radio frequency signal based on the downlink signal and transmits the radio frequency signal to the terminal device through a multipath channel such that a portion of the radio frequency signal intended for the terminal device focuses at the terminal device.

主权项

1. An apparatus comprising:
a base station comprising:
an input module to receive a probe signal sent from a terminal device; anda data processor configured to:
generate a signature waveform that is based on channel information derived from the probe signal,identify data symbols intended to be transmitted to the terminal device, and modify the data symbols based on the channel information, the modification of the data symbols designed to reduce inter-symbol interference when the data symbols are received by the terminal device, andgenerate a downlink signal based on the modified data symbols and the signature waveform; wherein the base station is configured to generate a wide-band radio frequency signal based on the downlink signal and transmit the radio frequency signal to the terminal device through a multipath channel such that a portion of the radio frequency signal intended for the terminal device focuses at the terminal device.