57results about How to "Improve demodulation efficiency" patented technology

A demodulation apparatus and method using a code table that decreases complexity. The demodulation apparatus includes a code table including a plurality of the code words, wherein similar ones of the code words are arranged to be grouped together; and a soft demodulator to calculate probabilities of individual bits that constitute the code words, and to generate a soft demodulation value of the data word.

The invention discloses a method and device for demodulating three-dimensional tip clearance. The device includes a tip clearance three-dimensional fiber detection probe having three independent elements, wherein the three independent elements acquire optical signals, outer ring optical signals and inner ring optical signals are further outputted, the three sets of outer ring optical signals and inner ring optical signals from the three independent elements are acquired by a pre-processing circuit, the pre-processing circuit includes a photoelectric conversion module, an amplification followermodule and a subtraction module, the three sets of outer ring optical signals and inner ring optical signals are converted by the photoelectric conversion module into six paths of corresponding photoelectric signals, and the six paths of corresponding photoelectric signals are amplified by the amplification follower module and outputted to the subtraction module and a single-chip microcomputer module. The device is advantaged in that the inner and outer ring light intensity signals of the three elements of the three-dimensional tip clearance fiber sensing probe are taken as input, the three sets of differential ratio signals are obtained through pairwise difference and ratio division, and the three-dimensional tip clearance information is demodulated through the three sets of differentialratio signals.

In order to improve the efficiency of user signal demodulation processing including interference suppression processing, a wireless receiving unit (10) forming a wireless base station receiving device (1) receives a wireless signal (101) including plural user signal components respectively transmitted from plural mobile terminals. An interference suppression unit (20) determines whether to perform a predetermined interference suppression processing upon demodulation of each user signal component from the wireless signal (101) (base band signal (102) output from the wireless receiving unit (10)) according to a reception quality (reception quality information (107)) of each user signal component that needs to be guaranteed for each mobile terminal and a transmission rate (transmission rate information (108)) of each user signal component determined for each mobile terminal. At this time, the interference suppression unit (20) causes a number of interference suppression demodulation blocks (30) corresponding to the number of user signal components determined to be subjected to the interference suppression processing to operate, and causes a number of normal demodulation blocks (40) corresponding to the number of user signal components determined not to be subjected to the interference suppression processing to operate.

An analog television (TV) receiver converts a received analog TV signal to a digital TV signal and performs digital demodulation to increase demodulation efficiency. The analog TV receiver includes a radio frequency (RF) turner and an intermediate frequency (IF) circuit. The RF tuner converts the received analog RF TV signal to an analog IF TV signal. The IF circuit includes a converting circuit and a digital demodulator. The converting circuit converts the analog IF TV signal to a digital TV signal. The digital demodulator demodulates the digital TV signal to generate a digital demodulated video signal and a digital demodulated audio signal.