Abstract: A filter and processing sequence is described that efficiently combines and performs two or more tasks required to demodulate a composite 3G (third generation) wireless signal formed by a combination of wideband 3.84 MHz (Universal Mobile Telecommunications System, identified, as acronym “UMTS”, or Universal Mobile Telecommunications System Terrestrial Radio Access, identified as acronym “UTRA”) carriers and narrowband 1.2288 MHz CDMA-2000 carriers. The three tasks, applied to each spectral component of the 3G wireless signal and described in the order of a traditional filtering structure are: Spectral translation, Bandwidth Reduction, and Sample Rate Selection. These tasks are traditionally implemented in three distinct pieces of hardware or software modules.

Abstract: A filter and processing sequence is described that efficiently combines and performs two or more tasks required to demodulate a composite 3G (third generation) wireless signal formed by a combination of wideband 3.84 MHz (Universal Mobile Telecommunications System, identiied a acronym “UMTS”, or Universal Mobile Telecommunications System Terrestrial Radio Access, identified as acronym “UTRA”) carriers and narrowband 1.2288 MHz CDMA-2000 carriers. The three tasks, applied to each spectral component of the 3G wireless signal and described in the order of a traditional filtering structure are: Spectral translation, Bandwidth Reduction, and Sample Rate Selection. These tasks are traditionally implemented in three distinct pieces of hardware or software modules.

Abstract: A fractional-spaced equalizer (FSE) is capable of performing joint intersymbol-interference (ISI) cancellation and matched filter (MF) processing. The FSE employs a constrained optimization technique to control the out-of-band frequency response of the equalizer's FIR while, at the same time, controlling the pass-band and roll-off of the FIR to cancel ISI. The format of the constrained optimization technique permits a single bank of multipliers elements to service the inner product computations associated both with the ISI cancellation and MF operations. This time-multiplexing technique promotes a conservation of hardware associated with the MF, and provides for a reduction in the computational complexity leading to an increase in power efficiency.

Abstract: A filter and processing sequence is described that efficiently combines and performs two or more tasks required to demodulate a composite 3G (third generation) wireless signal formed by a combination of wideband 3.84 MHz (UMTS or UTRA) carriers and narrowband 1.2288 MHz CDMA-2000 carriers. The three tasks, applied to each spectral component of the 3G wireless signal and described in the order of a traditional filtering structure are: Spectral translation, Bandwidth Reduction, and Sample Rate Selection. These tasks are traditionally implemented in three distinct pieces of hardware or software modules.

Abstract: There is disclosed a fractional-spaced equalizer (FSE) that is capable of performing joint intersymbol-interference (ISI) cancellation and matched filter (MF) processing. The FSE employs a constrained optimization technique to control the out-of-band frequency response of the equalizer's FIR while, at the same time, controlling the pass-band and roll-off of the FIR to cancel ISI. The format of the constrained optimization technique permits a single bank of multipliers elements to service the inner product computations associated both with the ISI cancellation and MF operations. This time-multiplexing technique promotes a conservation of hardware associated with the MF, and provides for a reduction in the computational complexity leading to an increase in power efficiency.