Abstract: Edge-emitting light source and method for fabricating an edge-emitting light source. The edge-emitting light source includes a photonic crystal having at least one waveguide region. An edge-emitting semiconductor structure having a light emitting active layer is incorporated within the at least one waveguide region. Light emitted by the edge-emitting semiconductor structure and within the bandgap of the photonic crystal is confined within the waveguide region and guided out of the photonic crystal through the waveguide region.

Abstract: A semiconductor laser device, comprising a buffer layer of a first conductivity type, a clad layer of the first conductivity type, an active layer and a clad layer of a second conductivity type formed on a semiconductor substrate of the first conductivity type, wherein a band gap in the buffer layer of the first conductivity type has a value which is greater than a band gap of the semiconductor substrate and smaller than a band gap of the clad layer of the first conductivity type, and an impurity concentration in the buffer layer of the first conductivity type is higher than an impurity concentration in the clad layer of the first conductivity type.

Abstract: A semiconductor laser diode comprising a semiconductor substrate having an active layer with a pair of cavity facets opposed to each other on both ends of active layer as well as a first dielectric film of an oxide and a second dielectric film of an oxynitride successively stacked on one cavity facet has sufficient initial characteristics with a film structure having excellent heat radiability for allowing stable high-output lasing over a long period without reducing a catastrophic optical damage level on an emission end.

Abstract: The present invention intends to provide a surface-emitting laser light source capable of generating a linearly polarized laser light having a single-lobed beam profile that takes the largest intensity value in its central area. A two-dimensional photonic crystal consisting of a plate member 31 with holes 311 or 312 arranged in a square lattice pattern is provided on one side of an active layer 23. The hole 311 or 312 is designed so that its plane shape on the emission side (plane “B”) is smaller than that on the active layer side (plane “C”). The center of gravity of the shape on plane “B” is displaced from that of the shape on plane “C” in the in-plane direction. This design lowers the degree of the in-plane symmetry of the two-dimensional photonic crystal, so that a linearly polarized laser light having a single lobe is obtained.

Abstract: In one aspect of the present invention, a multiple wavelengths semiconductor laser device may include a supporting member, a first semiconductor laser element provided on a first substrate, mounted on the supporting member as face up, and configured to emit a first wavelength laser, and a second semiconductor laser element provided on a second substrate which has lower heat conductivity ratio than the first substrate, mounted on the supporting member as face down, and configured to emit a second wavelength laser toward in substantially a same direction as the first wavelength laser, and in another aspect of the invention, a multiple wavelengths semiconductor laser device may include a supporting member, a first semiconductor laser element provided on a first substrate, mounted on the supporting member as face up, and configured to emit a first wavelength laser, a second semiconductor laser element provided on a second substrate which has lower heat conductivity ratio than the first substrate, mounted on the s

Abstract: A gas laser oscillator includes a supply-side valve for regulating a laser gas supply to a gas chamber, an exhaust-side valve for regulating a laser gas exhaust from the gas chamber, a gas pressure measuring device for measuring a pressure in the gas chamber, and a control device functioning as a laser gas replacement measuring device. The control device makes a first measurement and a second measurement of the pressure in the gas chamber by a gas pressure measuring device at a predetermined time interval during the vacuuming or purging of the gas chamber, and determines the laser gas replacement amount per unit time during the laser oscillating operation, based on the results of the first and second measurements.

Abstract: The system uses a color camera and an optical system to map two colors emitted from an object such as a furnace, boiler combustion zone, or burner flame into a temperature image. The color camera utilizes a color video chip with interspersed pixels for each color to reduce alignment issues and utilize the same optical path. In addition, the optical system utilizes a dual band pass optical filter thereby eliminating the number of optical elements and minimizing radiation loss through the optical system thereby improving the dynamic range of the system.

Abstract: A portable continuous body temperature monitoring device for a helmet or head gear to be worn by athletes, sports enthusiasts and workers in hot environments that is composed of a therimstor located in a position that is in contact with the temple or forehead of the wearer through attached head gear, pads or straps. The device also contains wiring for an LCD readout and a computer chip for algorithm and analysis of body temperature, signaling the device to trigger an alarm that is either auditory or visual. The computer chip also contains a correlation algorithm for accurate interpretation of body surface temperatures. The device is powered through a button battery and provides protection for dangerous rises in the body temperature of the wearer. The device can also contain electrodes in direct contact with the forehead of the wearer in order to monitor heart rate.

Abstract: A digital temperature detection circuit adapted for use with a semiconductor device is disclosed. The digital temperature detection circuit comprises a digital temperature generation unit adapted to detect an internal temperature of the semiconductor device, convert the internal temperature into perception data in accordance with a perception data code, and output the perception data. The digital temperature detection circuit further comprises an offset shift unit adapted to shift the perception data in accordance with offset data to thereby generate standard data; and, an offset generation unit adapted to generate the offset data, wherein the offset generation unit is controlled from outside of the digital temperature detection circuit.

Abstract: An UWB Transceiver for Multi-Band OFDM communication including an antenna switch (342), a receive front end and down-converter (303), an up-converter and power amplifier (305), and a frequency synthesizer (211). The transceiver achieves high dynamic range by employing a synthesizer (211) with very low spurious components and a receive front end with an efficient receive RF filtering embodiment. The synthesizer (211) may rapidly switch frequencies in a manner that minimizes spurious components outside the band group used for communication. The receiver (200) also achieves high selectivity and sensitivity by dividing the receive signal path into even and odd band groups.

Abstract: The present invention provides a method and an apparatus for detecting one or more of spread spectrum signals of two or more types having distinct statistical characteristics to identify a signal input to an amplifier having an input terminal. The method comprises determining a signal characteristic of the signal input to associate the one or more of spread spectrum signals with one of the two or more types in response to an indication of statistical characteristics associated with the one or more of spread spectrum signals at the input terminal of the amplifier. The method further comprises distinguishing between the one or more of spread spectrum signals of the two or more types based on the statistical characteristics associated therewith.

Abstract: To select the frequency (SF) and/or time (ST) spreading parameters for a communication system using a quadrature amplitude modulation and implementing a CDMA technique and an OFDM multiplexing the attenuation coefficients of the propagation channel are estimated For all the F sub-bands of SF subcarriers and the T blocks of ST OFDM symbols, at least one asymptotic signal-to-interference+noise ratio (SINR) is determined, based on the attenuation coefficients of the propagation channel and the type of equalizer used by the receiver. From this, for each coded information block obtained from the modulation, the compressed asymptotic SINR is deduced, expressed by an analytical formula dependent on the frequency (SF) and time (ST) spreading parameters and the frequency (SF) and time (ST) spreading parameters which maximize the value of the compressed asymptotic SINR are selected.

Abstract: A channel estimation circuit (12) of an individual CH path demodulation unit (1A-1L) performs a channel estimation from an individual CH. A channel estimation value correction circuit (22) of a shared CH path demodulation unit (2A-2L) then corrects a reception power fluctuation due to uplink transmission power control which is caused by the timing offset between the individual CH and the shared CH. The resultant data is used for the demodulation by a shared CH demodulation circuit (23).

Abstract: A method of updating a multipath search that has located one or more multipath component peaks in a received signal, the method comprising repeating the search using a delay spread window extending either back from the latest peak or forward from the earliest peak.

Abstract: One aspect of the present invention is a method for combining a direct sequence spread spectrum signal comprising signal components that each may be characterized with a space variable and a time variable comprising the steps of: despreading said signal components; and determining a set of combining coefficients from said signal components using a Minimum Mean Square Error combining method that considers said space and time variables of the signal components in parallel. The Minimum Mean Square Error combining methods may utilize iterative methods such as the Least Mean Squares method or the Recursive Least Squares method.

Abstract: An iterative multistage detection system and method for orthogonally multiplexing K channels onto a signal processing chain using N orthogonal sequences of length N. The K channels include a first set of N channels and a second set of M channels (the M channels being separate and distinct from the N channels), where K=N+M. In a first iteration, interference from the first set of N channels imparted on the second set of M channels is removed from the multiplexed signal, thereby enabling the symbol values associated with the second set of M channels to be reliably estimated. In a second iteration, interference from the second set of M channels imparted on the first set of N channels is removed from the first set of N channels, thereby enabling the symbol values associated with the first set of N channels to be reliably estimated.

Abstract: A receiving device and a receiving method enabling the high-speed and high-accuracy interference reducing process are provided. The interference reduction receiving device despreading digital signal at a plurality of timings, multiplying each of the signals after being despread by a weight and combining the signals, comprises an estimation unit estimating channel response vector having, as elements, channel estimation values corresponding to the respective timings based on the digital signal, a quantizing unit quantizing the digital signal in the vicinity of the respective timings, a signal correlation matrix generation unit generating a signal correlation matrix having, as the element, each signal correlation value calculated based on the respective quantized signals, and an weight calculating unit calculating the weight based on the channel response vector and the signal correlation matrix.

Abstract: In one embodiment of the invention, a method for detecting a network loop problem in a network, includes: selecting a known static address of a selected device which should normally be detected at not more than one port of a downstream device; determining if the static address is detected in more than one port in a downstream device, wherein the current downstream device includes a first port which normally detects the known static address and a second port; if the static address is detected at the second port of the current downstream device, then determining the connection to the second port and if the connection to the second port is a leaf, then identifying the leaf as a misbehaving node, and if the connection to the second port is not a leaf, then evaluating a next downstream device.

Abstract: A line card is proposed in which one or more DMT processing modules 1 communicate with a data link layer platform, such as an ATM, POSPHY or Ethernet processor. The data relating to a single symbol is transmitted between the data link layer platform and a given one of DMT processing modules in a plurality of data portions spaced apart in time. The data portions relating to different channels of a given DMT processing module (or to different DMT processing modules) are interleaved in time. Since the data portions of a given symbol are spaced apart in time, the data relating to a single symbol is transmitted over a longer time period than in conventional devices which reduces the effective burstiness of the traffic, and thus reduces the memory requirements of the data link layer platform.

Abstract: In the context of high-speed serial links, data-dependent jitter compensation techniques performed using phase pre-distortion. Broadly contemplated is an expansion of the notion of pre-emphasis beyond conventional amplitude compensation of ISI, whereby phase pre-emphasis for compensating data-dependent jitter (DDJ) is introduced. DDJ can be addressed by exploiting the relationship between the data sequence and the timing deviation. Phase pre-emphasis improves the signal integrity with little additional power consumption in the transmitter and with no cross-talk penalty.

Abstract: Provided is a method and apparatus for enhancing the efficiency of entropy-coding a fine granular scalability (FGS) layer. The method of entropy-encoding current coefficients included in a predetermined one of a plurality of separate quality layers includes reading coefficients of lower layers, which correspond to the current coefficients; grouping the current coefficients according to a combination of the coefficients of the lower layers; and encoding each group of the current coefficients using a different context model.

Abstract: A one-pass picture-layer rate control (RC) method and system for controlling a video encoder: The bit allocation and determination of quantization parameter (QP) in this rate control method and system are based on a Rate-Quantization (R-Q) scale model. The R-Q model is a linear one, wherein the number of bits per picture is in reverse ratio of quantization scale for that picture. A conversion of exponential-based QP to linear-scaled QP is taken in the calculation of complexity model and determination of QP. The conversion is integer-based and is consistent with the quantization array defined in the H.264 standard.

Abstract: A system and method for determining the efficient number of reference frames which are to be evaluated for an image using frame level adaptation techniques. The system and method determines and updates the number of reference frames which are to be searched based on the reference frame selection statistics of the previously coded frame. Preferably, the invention increases the number of reference frames to be referred when a first desired ratio of blocks refer to the furthest reference frame. The invention decreases the number of reference frames if a second desired ratio of blocks refer to the furthest reference frame. The motion value is considered in increasing the number of reference frames. The invention evaluates whether portions of the image frames are static, thereby terminating motion vector searches on that portion.

Abstract: Methods and apparatuses to encode multimedia data enabling, among others, for example, improved decoded video quality, improved error recovery capabilities and/or improved decoding efficiency are described. A method according to the application includes one or more of the following: initializing a pixel-level reference counter for a current frame, performing a prediction of a next frame referring to the current frame, incrementing the pixel-level reference counter for each pixel of the current frame that is referenced during the prediction of the next frame, readjusting a macroblock bandwidth map of the current frame, repeating the steps of initializing, performing and readjusting for each next frame in a plurality of next frames referring to the current frame, and encoding the current frame based at least in part on the readjusted macroblock bandwidth map of the current frame.

Abstract: A method of and apparatus are provided for deciding an intraprediction mode, in which pixels of an input block are labeled according to their pixel values and a directivity is extracted from pixels having the same label to decide the intraprediction mode. The method includes assigning labels to the pixels of the input block according to the pixel values of the pixels, scanning the labeled input block according to a scan table and calculating mode counts of intraprediction modes by counting the intraprediction mode if the pixels at predetermined positions according to a direction of the intraprediction mode are assigned the same label, and deciding the intraprediction mode for the input block using the calculated mode counts.

Abstract: Provided is a decoding apparatus comprising a decoder configured to receive a series of encoded pictures and to decode each of the encoded pictures to produce a series of decoded pictures, each of the encoded pictures being either intra-encoded or inter-encoded, and each of the decoded pictures being either referred or nonreferred, a blocking noise suppressor configured to suppress blocking noise of each of the decoded pictures, and a controller configured to detect an amount of a load, to run each of the decoded pictures through the blocking noise suppressor if the detected amount of the load is lower than a given threshold, to have each of the decoded pictures being non-referred bypass the blocking noise suppressor if the detected amount of the load is no lower than the threshold, and to transmit each of the decoded pictures either having been run through or having bypassed the blocking noise suppressor.

Abstract: The uncompressed wireless transmission of video, as with many other wireless applications, requires constant knowledge of channel characteristics at the receiver end. To estimate the channel and track its changes, pilots containing known data are sent in various parts of the used bandwidth. The use of such pilots reduces the effective bandwidth available for data transmission. Due to the relative high immunity to introduced interference of certain transmission modes, such as QPSK and QAM, pilots can be modulated by digital data components. At the receiver, pilots are demodulated and used for a decision-directed circuit to determine the characteristics of the transmission channel. The additional bandwidth allows a higher data rate which may be such used for various purposes as diversity, coding, etc. Such use of pilot signals is of particular advantage in the wireless transmission of the DC and near DC components of essentially uncompressed video.

Abstract: Decoding a multiview video signal comprises: receiving a bitstream comprising encodings of multiple views of the multiview video signal, each view comprising multiple pictures segmented into multiple segments; and obtaining a predictor for illumination compensation of a first segment using an offset value for illumination compensation of at least one neighboring segment adjacent to the first segment, including selecting the at least one neighboring segment according to a predetermined order among the neighboring segments.

Abstract: Decoding a multiview video signal comprises: receiving a bitstream comprising encodings of multiple views of the multiview video signal, each view comprising multiple pictures segmented into multiple segments; and obtaining a predictor for illumination compensation of a first segment with respect to a reference picture using an offset value for illumination compensation of at least one neighboring segment adjacent to the first segment according whether the reference picture associated with the first segment is the same as a reference picture associated with the neighboring segment.

Abstract: Decoding a multiview video signal comprises: receiving a bitstream comprising encodings of multiple views of the multiview video signal. Each view comprises multiple pictures segmented into multiple segments. The decoding also comprises extracting flag information associated with a portion of the multiview video signal from the bitstream indicating whether illumination compensation of segments within said portion of the multiview video signal is enabled. For a portion in which illumination compensation is enabled according to the extracted flag information, a value associated with a segment within the portion is extracted from the bitstream and it is determined from said extracted value whether illumination compensation of the segment is to be performed.

Abstract: Decoding a multiview video signal comprises: receiving a bitstream comprising encodings of multiple views of the multiview video signal, each view comprising multiple pictures segmented into multiple segments; obtaining an offset value for illumination compensation of a first segment with respect to a reference picture, wherein the offset value is predicted using an offset value for illumination compensation of at least one neighboring segment determined based on characteristics associated with the neighboring segment; and decoding the bitstream using illumination compensation for the first segment including forming a sum that includes a predictor for pixels of the first segment obtained from the reference picture, a residual for pixels of the first segment, and a corresponding offset value for illumination compensation.

Abstract: A shortest cut duration is a minimum required period between an edit point set on a stream of pictures such as an MPEG stream and the next edit point set on the stream. It is an object of the present invention to make restrictions on the shortest cut duration lenient in a process to seamlessly reproduce a result of editing the stream in order to enhance the freedom of editing in carrying out a process of editing the stream. In order to achieve this object, a controller detects each edit point set on the stream and, for the edit point, the controller identifies fewest possible pictures, which are not to be displayed but must be decoded first before decoding a picture to be displayed after the edit point. Then, the controller finds a start point representing a timing to start a process of decoding the one or fewest possible pictures.

Abstract: The present invention comprises a system and method for controlling the rate a data encoder generates compressed data. The system and method are preferably implemented as program code stored and executed by a processor or computer that is interfaced to standard variable or constant bit rate encoders known in the art. The system preferably encodes and compresses video signals received from a camera, and controls the rate at which the compressed data is generated by the encoder so that storage capacity reserved for the compressed data will not be exceeded. The device preferably takes advantage of periods when the data generation rate is low to increase the quality of video data generated during periods of high activity.

Abstract: A data processing system including a buffer configured to temporarily maintain a portion of a plurality of compressed data streams and a switch. Each portion of the plurality of compressed data streams comprise one or more units of an encoded media signal. The switch is for providing selective connectivity between the buffer and one or more processors configured to change a property of the data stream. The switch directs one or more units from the buffer to the one or more processors.

Abstract: Methods and apparatuses to encode multimedia data enabling, among others, for example, improved decoded video quality, improved error recovery capabilities and/or improved decoding efficiency are described. An encoder device determines one or more distortion values for one or more portions of multimedia data based at least in part on one or more concealment methods related to concealing the one or more portions if the one or more portions were received in error. The encoder device determines one or more encoding methods for the one or more portions based at least in part on the one or more estimated distortion values. In one aspect, determining the one or more encoding methods comprises determining the one or more encoding methods so as to refresh the one or more portions based at least in part on a comparison of the one or more estimated distortion values and one or more thresholds.

Abstract: Simple, inexpensive, general-purpose devices and methods achieve simultaneous, full-duplex and bi-directional communication of analog, digital or audio signals across a single conductor. “Sifudu” transceivers, which stands for “simultaneous and full-duplex,” reduce the number of cables necessary for transferring information between two or more terminals at a given rate, and/or facilitate information transfer at a higher rate than traditional circuits across the same number of cables. The transceivers can accomodate both digital and analog signals of arbitrary polarity. Since a sifudu circuit is capable of transmitting analog signals, it is also capable of transmitting digital signals in frequency, phase, or amplitude shift keyed form, thus opening the possibility of realizing higher baud rate than other simultaneous bidirectional communication systems that transfer digital data only, one bit at a time in each direction.

Abstract: Apparatus, and an associated method, for modeling a channel impulse response of a radio channel. The model emulates an actual radio channel and is formed of non-diffuse as well as diffuse components. The model is used, for example, to test mobile stations for their compliance with E-911 phase II mandates.

Abstract: Disclosed is a MIMO-OFDM system, wherein the transmitter comprises a serial/parallel converter for converting continuously inputted symbols of the number of subcarriers to K parallel signals; a signal reproducer for reproducing K parallel signals by the number of transmit antennas L an eigenmode generator for generating eigenbeam of the reproduced signals outputted from the signal reproducer at each subcarrier, on the basis of Nf eigenbeam forming vectors which are fed back long-term and information of a best eigenbeam forming vector at each subcarrier which is fed back short-term, through the feedback device; and a plurality of inverse Fourier converters for receiving the signals outputted from the eigenmode generator and generating an OFDM symbol.

Abstract: A method of generating a code sequence in a wireless communication system is disclosed. More specifically, the method includes recognizing a desired length of the code sequence, generating a code sequence having a length different from the desired length, and modifying the length of the generated code sequence to equal the desired length. Here, the step of modifying includes discarding at least one element of the generated code sequence or inserting at least one null element to the generated code sequence.

Abstract: Improvement of transmission efficiency is sought by stopping transmission of unnecessary MLI data. A transmitting circuit 111 in a base station apparatus 110 has an MLI modulation part 248 composed of an MLI generating circuit 238, a symbol modulation circuit 239, and an IFFT circuit 240, a user data modulation part 249 composed of an encoder circuit 234, a symbol modulation circuit 235, a transmission power control circuit 236, and an IFFT circuit 237, and a transmission operation control circuit 113. The transmission operation control circuit 113 controls operation timing of the MLI modulation part 248, the user datamodulationpart 249, and a multiplexer 243 based on a signal to notify that ACK input from a receiving circuit 112 has been received so that slots containing no MLI data are generated.

Abstract: A method for detecting symbol timing in an OFDMA system is described, wherein a sub-channel comprises several groups (1) of sub carriers (2) spread over the frequency band, each group (1) of sub carriers (2) comprising at least one pilot carrier (4), said method comprising the steps of: correcting the received pilot sub carriers (4) with a set of different time shifts, calculating the standard deviation of the corrected pilot sub carriers (4) for each time shift, selecting the time shift showing the minimum standard deviation, and applying said time shift to received data sub carriers (5) on said sub-channel. Furthermore a OFDMA base station to be used to execute the method mentioned above, plus a computer program product causing a computer to perform said method is described.

Abstract: An orthogonal frequency division multiplexing (OFDM) demodulator demodulates an OFDM signal constituted by OFDM symbols each including at least an effective symbol and a scattered known signal. The OFDM demodulator includes a Fourier transform performing unit, a known signal extracting unit, a time dimension interpolation unit, a delay spread generating unit, a frequency dimension interpolation unit, and a waveform equalizing unit. The delay spread generating unit employs a time difference between a time point for a starting position of the Fourier transform operation performed by the Fourier transform performing unit and a time point at which a latest arriving path arrived as the delay spread.

Abstract: A synchronization unit for performing timing synchronization in the time domain includes storage, a multiplier, a signal analyzer, and a timing error estimation unit. The storage stores a reference signal. The multiplier calculates a sum of minus one product shift and a sum of plus one product shift based on the reference signal. The signal analyzer calculates left and right cross-correlation points based on the sum or minus one product shift and the sum of plus one product shift. The timing error estimation unit estimates a timing error of a received signal based on the left cross-correlation point and right cross-correlation point.

Abstract: When a storage circuit (13) of a certain stage and those of the following stages are caused to stop, a storage element circuit (11) of a memory area B (2) that stores survivor paths of a particular state is caused to serve as a repeater, and the other storage element circuits (11), which belong to a memory area C (3) are caused to stop, whereby a decoding result can be outputted without using additional bus wires and selectors.

Abstract: Systems and methods for performing space time coding are provided. Two vector?matrix encoding operations are performed in sequence to produce a three dimensional result containing a respective symbol for each of a plurality of frequencies, for each of a plurality of transmit durations, and for each of a plurality of transmitter outputs. The two vector?matrix encoding operations may be for encoding in a) time-space dimensions and b) time-frequency dimensions sequentially or vice versa.

Abstract: An apparatus and method for transmitting and receiving a communication signal includes selecting a pulse shape for a continuous phase modulated waveform, encoding specific information into the waveform to form a communication signal and transmitting the communication signal. The system receives the transmitted communication signal and samples the received signal at a specified rate, the sample rate being less than the symbol rate, enabling reconstructing the waveform and extracting encoded information at sub sample per symbol rates, thereby reducing the reliance on high speed wideband analog to digital converters (ADC) for high speed applications.

Abstract: In a radio-controlled device for measuring time, a demodulating unit demodulates the time information from the received electric signal based on amplitude information of the target radio wave. The amplitude information is obtained from in-phase and quadrature-phase components of the target radio wave. A phase calculator calculates phase data associated with a phase of the target radio wave based on the in-phase and quadrature-phase components. A variability calculator calculates a variability of the phase data of the target radio wave relative to a reference phase. The reference phase changes at a constant rate in time according to a frequency error. The frequency error is contained in the reference signal relative to a frequency of the target carrier wave. A reception determining unit determines whether reception of the radio-controlled device is good based on the calculated variability.

Abstract: A device detects a frequency offset by a frequency converter (209) for converting a received signal into a sideband and comprises a calculating means (211) for calculating a characteristic quantity of the sideband which is a measure of the frequency offset.

Abstract: A receiver comprises a frequency down-conversion stage (14) for demodulating a received signal to produce an uncorrected demodulated signal (vin ), a dc offset voltage correcting circuit (22) having an output (28) for a corrected signal and a data recovery circuit (42) coupled to the output. The dc offset voltage correcting circuit (22) comprises an input for the uncorrected demodulated signal (vin), a bit slicer (30) for detecting received data, a filter (32) coupled to the output of the bit slicer for regenerating the demodulated signal less noise and dc offset, a subtracting stage (34) for subtracting the regenerated demodulated signal from a delayed version of the uncorrected demodulated signal to produce the dc offset voltage (voff) and a feedback circuit for feeding back the dc offset voltage to the bit slicer.

Abstract: An integrated circuit arrangement is provided for converting a high-frequency bandpass signal to a low-frequency quadrature signal with a first in-phase component and a first quadrature-phase component, which has: an amplifier arrangement, which is designed to generate an amplified signal and has a first amplifier stage for amplifying the high-frequency bandpass signal, a mixer unit with a first mixer to provide the first in-phase component and a second mixer to provide the first quadrature-phase component, and a driver amplifier, which is designed to generate a local oscillator signal. According to the invention, between the amplifier arrangement and the mixer unit a polyphase filter is disposed, which converts the amplified signal to a complex-valued polyphase signal with a second in-phase component and a second quadrature phase component.