Patent ID: 6757334
Filing Date: 2004-06-29
Classification: H04B,H04L

Abstract:
A cross-correlated signal processor comprising:(a) means for cross-correlating a first input signal with a second input signal to generate cross-correlated in-phase (I) and quadrature-phase (Q) output signals adapted for Bit Rate Agile (BRA), cascaded mis-matched (ACM) Modulation-Demodulation (Modem) Format Selectable (MFS) and Code Selectable (CS) processing, the first input signal comprising a fraction or one or more than one symbol synchronous and/or asynchronous time constrained signal (TCS) response and cascaded long response (LR) filtered signal symbols of one or more input signals, and the second input signal comprising signal symbols of a quadrature-phase signal, the cross-correlated in-phase (I) and quadrature-phase (Q) output signals generated according to the following schedule: (i) when the in-phase signal is zero, the cross-correlated quadrature-phase signal is close to the maximum amplitude normalized to one (1); (ii) when the in-phase signal is non-zero, the magnitude of the cross-correlated quadrature-phase signal is reduced from 1 (normalized) to A, where 0&lE;A&lE;1; (iii) when the quadrature-phase signal is zero, the magnitude of the cross-correlated in-phase signal is close to the maximum amplitude; and (iv) when the quadrature-phase channel signal is non-zero, the magnitude of the cross-correlated in-phase signal is reduced from 1 (normalized) to A, where 0&lE;A<1; (b) means for quadrature modulating the cross-correlated in-phase and quadrature-phase output signals to provide a cross-correlated quadrature modulated output signal, the means for quadrature modulating including a BRA, MFS and BRA filter set; (c) controller and selector means for BRA rate, MFS and CS processor selection and Linear and/or Non-Linearly Amplified (NLA) baseband and/or quadrature modulated signal selection; (d) coupling means for coupling the cross-correlated quadrature modulated output signal to a transmission medium; (e) a BRA, MFS and CS quadrature demodulator; (f) a receiver port for connection of the received cross-correlated signal to the BRA, MFS and CS demodulator; and (g) a Mis-Matched (MM) demodulator filter set for BRA, MFS and CS in which a filter set of the quadrature demodulator is mis-matched to the filter set of the means for quadrature modulating.