Digital Mobile Communication

摘要

Digital mobile communications devices and methods for processing, modulation and demodulation, transmission and reception of spread spectrum signals, Orthogonal Frequency Division Multiplexed (OFDM) signals and conversion of spread spectrum signals into OFDM signals. Received spread spectrum signals from 3G cellular systems are converted into OFDM signals and transmitted in a Wi-Fi network. Received OFDM signals, received in a cellular system in a first RF frequency band, are demodulated and in a repeater mode are re-transmitted in a cellular system in a second OFDM radio frequency band. One or more receivers and demodulators for receiving demodulating and processing received signals into location finder information. A video camera in mobile device generates video signal and transmits video signal with location finder information signal.

主权项

1. A method comprising the steps of:
processing in a baseband processor of a mobile device a fingerprint signal for authenticating use of said mobile device; processing in said mobile device a touch screen generated signal into a processed touch screen control signal for controlling said mobile device; receiving in said mobile device a modulated signal; demodulating said modulated signal into a demodulated signal; processing said demodulated signal into a processed baseband location finder signal; providing said processed baseband location finder signal to an interface unit of said mobile device; receiving a modulated spread spectrum signal from a cellular base station in said mobile device; demodulating said modulated spread spectrum signal into a demodulated spread spectrum signal; processing said demodulated spread spectrum signal into a processed baseband spread spectrum signal; modulating in said mobile device said processed baseband spread spectrum signal into a modulated Orthogonal Frequency Division Multiplexed (OFDM) signal; transmitting, said modulated OFDM signal for use in a wireless network; generating in said mobile device a video signal; processing and filtering said video signal into a cross-correlated in-phase and quadrature-phase Time Constrained Signal (TCS) wave form and Long Response (LR) filtered cross-correlated filtered baseband signal; modulating in a quadrature modulator said cross-correlated filtered signal into a cross-correlated modulated signal; transmitting said cross-correlated modulated signal; and generating and processing in said mobile device a motion detector generated signal into a motion detector generated control signal for control of said mobile device.