Abstract: A method for performing transposition of second-generation superconducting wires, and a superconducting coil manufactured using the same are disclosed. The method for manufacturing a second-generation superconducting wire comprises: slitting a multiple-layered thin superconducting wire film, obtained by epitaxial growth, to form a zigzag-shaped slit portion which includes a plurality of sections each having a predetermined first length and a bent portion having a predetermined second length; continuously and repeatedly processing each section of the slit portion of the superconducting wire film until a desired length is processed to obtain first and second wires using two superconducting wire films; positioning the first and second wires so their bent portions face each other; and interweaving the first and second wires together so the first wire passes over the second wire at their first overlapped portion and below the second wire at their second overlapped portion, to couple the first and second wires.

Abstract: An adaptive interference suppression receiver for a DS/CDMA system includes: input signal generators outputting a part of received signals of receiver antennas that has a coding block's transfer code; adaptive filter blocks filtering a complex signal output from the input signal generators with a tap weight updated based on a constraint MMSE criterion and estimating phase and amplitude components of a specific user channel using the filtering output signal to generate a channel-estimated signal; a signal restorer combining the channel-estimated signal and the filtering output signal and restoring an original signal; a signal selector for selecting known training data signal or the restored signal; and error generators comparing the channel-estimated signal and the filtering output signal and calculating an error between the two signals.

Abstract: The present invention relates to a receiver applicable to a code division multiple access system having multiple transfer rates. In a CDMA system, when performing a de-spreading process to extract information from received data in which various terminal signals or multiple path signals are asynchronously mixed, interference between a plurality of users or paths tends to occur. The present invention proposes an interference canceller for effectively canceling the interference between the users or paths. For this, the present invention implements a parallel interference canceller for estimating in parallel interference signals from asynchronously received signals and canceling the estimated interference signals from the received signals. In the present invention, when implementing a parallel interference canceller for asynchronously received signals, as bit information of the received signals is not aligned in the same time frame, the following conditions are considered.

Abstract: An interference cancellation receiver reduces the multiple access interference in a CDMA system. The receiver includes a demodulator for receiving a residual signal or a received signal from a calling terminal as an over-sample unit baseband spread signal and down-sampling the baseband spread signal on a chip basis to output a demodulation signal, a regenerator for performing a bit decision for the demodulation signal, regenerating signals through the channelization and scrambling and converting the regenerated signals to signals on the over-sample basis, an adder for summing up the over-sample unit signals, a filter for filtering the summed-up signal to output a band spread signal, a subtractor for subtracting the band spread signal from the received signal to output the residual signal and a delay for keeping timing with the residual signal by delaying the chip unit signals outputted from the regenerator.

Abstract: The present invention related to a method of manufacturing an inductor in a semiconductor device. A wire for an inductor is thickly formed by performing at least two damascene process in the same pattern of different patterns, thus reducing resistance and obtain a good Q (Quality) factor. Therefore, the present invention has effects that it can improve reliability of a process and electrical properties of a device.

Abstract: An apparatus and method for performing circular group-wise parallel interference cancellation in a multi-rate DS-CDMA system that reduce the multiple access interference in a CDMA system are disclosed. The invention provide a method of grouping received signals, which improves the interference cancellation efficiency of the signal receiver. The method of the invention groups a plurality of signals according to the magnitude of signals, and sequentially performs interference cancellation with respect to the groups in order of the signal magnitude. The apparatus and method determine the signal rank by using both the power estimation value of the received signal of each finger and the soft bit decision value being the output value of the maximal ratio combiner, perform grouping of the fingers selected by a finger selector, and finally perform interference cancellation. The soft bit decision value is independent of channel, and has the bit information at the time of signal transmission.

Abstract: The present invention provides a method of improving the speed of processing of a system and optimizing system performance in RTOS by searching for a task on which occupancy time is the longest in a system mode and transferring a stack from an armored memory to an embedded memory, and by reallocating the stack pointers. According to the present invention, since a microprocessor which has an expensive and large embedded memory does not have to be mounted, costs of manufacturing in mass production can be lowered.

Abstract: A transmission apparatus for DS/CDMA system with MIMO antenna system is disclosed. The apparatus includes a transmitter for transmitting data by applying different scramble code to each transmitting data through a plurality of the transmitting antennas and receiver for receiving transmitted data by obtaining diversity gain based on the maximum order of the diversity in order to effectively detect data. The present invention has excellent detection performance by receiving data with full order of diversity, which is multiple of the number of receiving antennas and the number of multipath, without complicated operation such as a decision feed equalizer.

Abstract: An adaptive weighted parallel interference cancellation system for CDMA that decreases MAI (multiple access interference) and thereby increases general performance, including K stages for iterative cancellation of MAI in a received signal of a user. Each stage includes a detector, a regenerator, and a subtractor. The detector is configured to determine a tentative bit decision from a despread signal. The regenerator that is connected with the detector in parallel is configured to spread an unmodulated signal, multiply a channel phase, and multiply by the output of the detector. The subtractor uses weighted signals that are adjusted user by user and according to changing environments.

Abstract: An adaptive interference suppression receiver for a DS/CDMA system includes: input signal generators outputting a part of received signals of receiver antennas that has a coding block's transfer code; adaptive filter blocks filtering a complex signal output from the input signal generators with a tab weight updated based on a constraint MMSE criterion and estimating phase and amplitude components of a specific user channel using the filtering output signal to generate a channel-estimated signal; a signal restorer combining the channel-estimated signal and the filtering output signal and restoring an original signal; a signal selector for selecting known training data signal or the restored signal; and error generators comparing the channel-estimated signal and the filtering output signal and calculating an error between the two signals.

Abstract: A static electricity removal apparatus capable of raising an alternating rate at which ions are generated according to the speed of an object requiring static electricity removal using a high-frequency high voltage AC voltage includes: at least one discharge electrode assembly having a plurality of needle-shaped electrodes aligned with each other, each needle-shaped electrode receiving the high-frequency high voltage AC voltage and generating ions using a corona discharge; a ground electrode for facilitating ion generation by the plurality of needle-shaped electrodes; a high-frequency high voltage generation unit connected to the at least one discharge electrode assembly, the voltage generation unit generating the high-frequency high voltage AC voltage outputted to the plurality of needle-shaped electrodes; and an ion blower adapted to blow ions from the plurality of needle-shaped electrodes to the object requiring static electricity removal.

Abstract: An interference canceller. A baseband signal is input to a detector's fingers, and the fingers detect multi-path signals and estimate the baseband signal's channel. An MRC uses the finger's despread signal and the channel estimate to output a soft bit decision value, while a signal regenerator uses a hard bit decision value and the finger's channel estimate to regenerate the baseband signal. An SIR measurer uses a soft bit decision value and a despreader's channel estimate to measure an SIR. A signal selector compares each detector's SIR measurement value with a target SIR, and when the SIR measurement value is greater than the target SIR, it selects the detector's regeneration signal to group received signals. A subtractor subtracts the regeneration signal from the baseband signal.

Abstract: An adaptive apparatus and method for detecting a receiving signal employing constrained minimum mean square error (MMSE) criterion as an adaptive algorithm for detecting CDMA receiving signal. The apparatus comprises an adaptive filtering means; a channel estimating means; a signal restoring means; a selecting means; a reference signal generating means; an error calculating means; and a tap weight controlling means. In the apparatus, an adaptive filter can be normally operated even if compensating a phase and amplitude of a channel at the same time.

Abstract: A method for canceling an interference signal by using a parallel multi-stage structure in a code division multiple access (CDMA) system, includes the steps of: a) delaying a receiving signal; b) receiving and predicting data and channel parameter from the individual user; c) regenerating the interference signal of the individual user by using the data and the channel parameter predicted by the multiple receiving and predicting; and d) canceling all the interference signals delayed and transferred through the delaying by the interference signal regenerated through the multiple interference regeneration.

Abstract: An interference cancellation receiver reduces the multiple access interference in a CDMA system. The receiver includes a demodulator for receiving a residual signal or a received signal from a calling terminal as an over-sample unit baseband spread signal and down-sampling the baseband spread signal on a chip basis to output a demodulation signal, a regenerator for performing a bit decision for the demodulation signal, regenerating signals through the channelization and scrambling and converting the regenerated signals to signals on the over-sample basis, an adder for summing up the over-sample unit signals, a filter for filtering the summed-up signal to output a band spread signal, a subtractor for subtracting the band spread signal from the received signal to output the residual signal and a delay for keeping timing with the residual signal by delaying the chip unit signals outputted from the regenerator.

Abstract: The present invention relates to a static electricity removal apparatus which is capable of raising an alternating rate at which ions are generated according to the speed of the charged objects using a high-frequency high AC voltage, resulting in an increase in a static electricity removing efficiency. The static electricity removal apparatus comprises at least one discharge electrode assembly including a plurality of needle-shaped electrodes aligned with each other, each of the needle-shaped electrodes generating ions using a corona discharge under the condition that it is provided with a high-frequency high AC voltage, a ground electrode for inducing ion generation by each of the needle-shaped electrodes, and a high-frequency high voltage generation unit connected to the discharge electrode assembly, the voltage generation unit generating the high-frequency high AC voltage to be provided to each of the needle-shaped electrodes of the discharge electrode assembly.

Abstract: The present invention relates to a receiver applicable to a code division multiple access system having multiple transfer rates. In a CDMA system, when performing a de-spreading process to extract information from received data in which various terminal signals or multiple path signals are asynchronously mixed, interference between a plurality of users or paths tends to occur. The present invention proposes an interference canceller for effectively canceling the interference between the users or paths. For this, the present invention implements a parallel interference canceller for estimating in parallel interference signals from asynchronously received signals and canceling the estimated interference signals from the received signals. In the present invention, when implementing a parallel interference canceller for asynchronously received signals, as bit information of the received signals is not aligned in the same time frame, the following conditions are considered.

Abstract: An apparatus and method for performing circular group-wise parallel interference cancellation in a multi-rate DS-CDMA system that reduce the multiple access interference in a CDMA system are disclosed. The invention provide a method of grouping received signals, which improves the interference cancellation efficiency of the signal receiver. The method of the invention groups a plurality of signals according to the magnitude of signals, and sequentially performs interference cancellation with respect to the groups in order of the signal magnitude. The apparatus and method determine the signal rank by using both the power estimation value of the received signal of each finger and the soft bit decision value being the output value of the maximal ratio combiner, perform grouping of the fingers selected by a finger selector, and finally perform interference cancellation. The soft bit decision value is independent of channel, and has the bit information at the time of signal transmission.