Methods used in Modulator and Demodulator (MODEM) for mobile internet and cellular system connected mobile devices and phones for reception of Global Positioning System (GPS) modulated signal, video Orthogonal Frequency Division Multiplexed (OFDM) modulated signal and spread spectrum signals controlled by touch screen generated signals and using fingerprint authentication. Methods for generating in mobile devices and in phones in-phase and quadrature phase cross-correlated Time Constrained (TCS) waveforms and cascaded Long Response (LR) filter filtered signals for modulation and transmission of these cross-correlated signals.