Abstract: A method, apparatus and computer program product for predicting received signal strength in a wireless mobile receiver. The invention bounds the range of allowed values for a next predicted signal. The bounded prediction compensates for erroneous values from multipath fading. The predicted signal strength is used to set the mobile receiver amplifier gain to the desired level.

Abstract: A transmitter 108 converts a complex baseband signal 140 having I and Q quadrature signal components 141 and 142 for transmission by an antenna 114. An intermediate frequency based complex-to-real up-converter 130 uses subsampling to convert the complex baseband signal 140 into a real digital signal 144 having digital signal representations 174. An intermediate frequency based bandpass filtering digital-to-analog converter 132 uses Delta-Sigma, bandpass techniques to convert the real digital signal 144 into a first analog signal 146 having analog signal representations 182. A post-conversion bandpass filter 134 isolates and boosts the signal-to-noise ratio of a selected analog signal representation 186 to output a second analog signal 148 having a post-filtered selected analog signal representation 192. A tracking bandpass filter 136 further bandpasses and up-converts the second analog signal 148 to output a transmittable signal 150 having a tracking-filtered selected analog signal representation 196.

Abstract: A transmitter 108 converts a digital baseband signal input 150 for transmission by an antenna 114 to support multiple communication standards. An over-deviation phase multiplier 130 increases signal phase deviation by a factor of M. A digital phase modulator 176 applies trigonometric lookup tables. A digital intermediate frequency up-converter 132 up-shifts frequencies of desired signal content. First and second digital-to-analog converters (DACs) 134 and 136 use relatively low-bit operations, which add DAC noise 212. First and second low pass filters 138 and 140 apply rejection above frequencies of desired signal content. An analog I/Q modulator 142 converts from complex to real signals, adding an unwanted signal spaced from the desired signal content by an intermediate frequency multiple. A limiter 144 reduces amplitude modulated noise. An over-deviation phase divider 146 divides signal phase deviation by 1/M to reduce phase modulated noise.

Abstract: A transmitter 108 converts a digital baseband signal input 150 for transmission by an antenna 114 to support multiple communication standards. An over-deviation phase multiplier 130 increases signal phase deviation by a factor of M. A digital phase modulator 176 applies trigonometric lookup tables. A digital intermediate frequency up-converter 132 up-shifts frequencies of desired signal content. First and second digital-to-analog converters (DACs) 134 and 136 use relatively low-bit operations, which add DAC noise 212. First and second low pass filters 138 and 140 apply rejection above frequencies of desired signal content. An analog I/Q modulator 142 converts from complex to real signals, adding an unwanted signal spaced from the desired signal content by an intermediate frequency multiple. A limiter 144 reduces amplitude modulated noise. An over-deviation phase divider 146 divides signal phase deviation by 1/M to reduce phase modulated noise.

Abstract: A method, apparatus and computer program product for predicting received signal strength in a wireless mobile receiver. The invention bounds the range of allowed values for a next predicted signal. The bounded prediction compensates for erroneous values from multipath fading. The predicted signal strength is used to set the mobile receiver amplifier gain to the desired level.

Abstract: A transmitter 108 converts a complex baseband signal 140 having I and Q quadrature signal components 141 and 142 for transmission by an antenna 114. An intermediate frequency based complex-to-real up-converter 130 uses subsampling to convert the complex baseband signal 140 into a real digital signal 144 having digital signal representations 174. An intermediate frequency based bandpass filtering digital-to-analog converter 132 uses Delta-Sigma, bandpass techniques to convert the real digital signal 144 into a first analog signal 146 having analog signal representations 182. A post-conversion bandpass filter 134 isolates and boosts the signal-to-noise ratio of a selected analog signal representation 186 to output a second analog signal 148 having a post-filtered selected analog signal representation 192. A tracking bandpass filter 136 further bandpasses and up-converts the second analog signal 148 to output a transmittable signal 150 having a tracking-filtered selected analog signal representation 196.