Abstract: A method and apparatus for measuring an elapsed time from a starting signal to an ending signal in a time-to-digital converter. Primarily, the invention calculates an amount of complete cycles from the starting signal to a starting edge of a next clock cycle or the next Nth clock cycle (N is a natural number great than one) after the clock cycle corresponding to the ending signal. The amount is multiplied by a cycle time of the coarse clock to obtain a coarse time value. A time residue is calculated from the ending signal to the starting edge. Finally, the time residue is subtracted from the coarse time value to obtain a required time.

Abstract: A wireless communication device and a digital self-interference estimation method thereof are provided. The wireless communication device, at respective timings, receives a plurality of self-interference signals and generates a plurality of ideal transmitting signals. The wireless communication device calculates a signal adjusting vector based on the self-interference signals and the ideal transmitting signals at different timings. The wireless communication device generates a main ideal transmitting signal at a main timing, and calculates, based on the signal adjusting vector, a main self-interference signal corresponding to the main timing according to the received self-interference and the main ideal transmitting signal.

Abstract: Methods of data allocation and signal receiving, a wireless transmitting apparatus, and a wireless receiving apparatus are provided based on orthogonal frequency division multiplexing (OFDM) technology. The wireless transmitting apparatus obtains a data stream and allocates the data stream to a first sub-carrier set. Each of the first sub-carrier set and a second sub-carrier set has sub-carriers with opposite frequencies to each other, respectively. The second sub-carrier is emptied or allocated according the data stream allocated to the first sub-carrier set. The data stream is converted into an OFDM signal transmitted through a transmitting module. The wireless receiving apparatus includes a single branch receiver for receiving a radio frequency (RF) signal and outputting a baseband signal. Subsequently, the data stream is restored from the baseband signal.

Abstract: Methods of data allocation and signal receiving, a wireless transmitting apparatus, and a wireless receiving apparatus are provided based on orthogonal frequency division multiplexing (OFDM) technology. The wireless transmitting apparatus obtains a data stream and allocates the data stream to a first sub-carrier set. Each of the first sub-carrier set and a second sub-carrier set has sub-carriers with opposite frequencies to each other, respectively. The second sub-carrier is emptied or allocated according the data stream allocated to the first sub-carrier set. The data stream is converted into an OFDM signal transmitted through a transmitting module. The wireless receiving apparatus includes a single branch receiver for receiving a radio frequency (RF) signal and outputting a baseband signal. Subsequently, the data stream is restored from the baseband signal.

Abstract: Methods of data allocation and signal receiving, a wireless transmitting apparatus, and a wireless receiving apparatus are provided based on orthogonal frequency division multiplexing (OFDM) technology. The wireless transmitting apparatus obtains a data stream and allocates the data stream to a first sub-carrier set. Each of the first sub-carrier set and a second sub-carrier set has sub-carriers with opposite frequencies to each other, respectively. The second sub-carrier is emptied or allocated according the data stream allocated to the first sub-carrier set. The data stream is converted into an OFDM signal transmitted through a transmitting module. The wireless receiving apparatus includes a single branch receiver for receiving a radio frequency (RF) signal and outputting a baseband signal. Subsequently, the data stream is restored from the baseband signal.

Abstract: Methods of data allocation and signal receiving, a wireless transmitting apparatus, and a wireless receiving apparatus are provided based on orthogonal frequency division multiplexing (OFDM) technology. The wireless transmitting apparatus obtains a data stream and allocates the data stream to a first sub-carrier set. Each of the first sub-carrier set and a second sub-carrier set has sub-carriers with opposite frequencies to each other, respectively. The second sub-carrier is emptied or allocated according the data stream allocated to the first sub-carrier set. The data stream is converted into an OFDM signal transmitted through a transmitting module. The wireless receiving apparatus includes a single branch receiver for receiving a radio frequency (RF) signal and outputting a baseband signal. Subsequently, the data stream is restored from the baseband signal.

Abstract: Disclosure is related to a reconfigurable sorter and a method of sorting using the sorter. The reconfigurable sorting method is adapted to the sorter essentially consisting of multiple serially-connected comparison units. The each comparison unit includes two registers. The sorter is particularly a reconfigurable device according to the number of sorted numerals. According to the exemplary embodiment, an input mode is initiated firstly. Initial values are set to the registers. The numerals are sequentially inputted to the registers. At the input mode, the values in the registers may be shifted if necessary and mutually compared in every comparison unit. The values in the registers of every comparison unit may be swapped based on the comparison. At output mode, the numerals are outputted sequentially. The values in the registers are shifted and swapped until all numerals are completely outputted. The output appears the sorted numerals with low timing latency.

Abstract: A distributed antenna in-door locating system has multiple antenna units, a head unit and a locating unit. The head unit is wired connected to the multiple antenna units respectively to assign a RF communication band to each user device. The locating unit is connected to the head unit and has a build-in locating process comprising steps of: (a) reading the assigned RF communication bands, and signal strength of RF signals in the assigned RF communication bands. (b) determining a location of each user device based on the assigned RF communication bands of each antenna unit and the signal strength of RF signals in the assigned RF communication bands. A administrator of the distributed antenna in-door locating system can obtain the location of each user device, and further obtain suitable locations for mounting the multiple antenna units in the area.

Abstract: A method for signal estimation and compensation and an apparatus using the same, adapted for estimating and compensating an imbalance effect between an in-phase path and a quadrature path of an Orthogonal Frequency Division Multiplexing (OFDM) communication system are provided. The method includes the following steps: receiving a signal, and using a plurality of symbols in a plurality of time frame to generate a plurality of balance coefficient groups, wherein every balance coefficient group includes a plurality of balance coefficient candidates; deriving a balance coefficient according to the balance coefficient set; and compensating the signal according to the balance coefficient.

Abstract: A method of transmitting a downlink radio signal from a distributed antenna system to a mobile device is provided. The distributed antenna system includes a plurality of transceivers and a control module. Each of the transceivers receives an uplink radio signal from the mobile device as a respective received signal. Each of the transceivers transmits the received signal to the control module. The control module provides to each of the transceivers the downlink radio signal with a respective intensity, which is determined by the control module according to an intensity of the received signal from the transceiver. Each of the transceivers transmits the downlink radio signal to the mobile device.

Abstract: A receiver with Inphase-Quadrature (I-Q) imbalance compensation and an I-Q imbalance compensation method thereof are provided. The receiver chooses a first receiving signal which includes a first data and a first noise, as well as a second receiving signal which includes a second data and a second noise from a plurality of receiving signals. The first data have a first positive frequency data and a first negative frequency data, while the second data have a second positive frequency data and a second negative frequency data. The receiver calculates an I-Q imbalance compensation parameter according to the first receiving signal and the second receiving signal, and compensates for a third receiving signal according to the I-Q imbalance compensation parameter. The I-Q imbalance compensation method is applied to the receiver to implement the aforesaid operations.

Abstract: An adaptive distributed antenna system comprises a control module coupled between multiple base stations, and multiple antenna groups, each of which includes multiple antenna devices each coupled to the control module via a transmission line, and operable to convert an external wireless signal and a transmitting signal from the transmission line respectively into a receiving signal and a signal to be radiated. The control module converts a downlink signal from any base station and the receiving signal from any transmission line respectively into the transmitting signal and an uplink signal. The control module is configured to establish a transmission link between one base station and one antenna device of the antenna groups.

Abstract: Disclosure is related to a reconfigurable sorter and a method of sorting using the sorter. The reconfigurable sorting method is adapted to the sorter essentially consisting of multiple serially-connected comparison units. The each comparison unit includes two registers. The sorter is particularly a reconfigurable device according to the number of sorted numerals. According to the exemplary embodiment, an input mode is initiated firstly. Initial values are set to the registers. The numerals are sequentially inputted to the registers. At the input mode, the values in the registers may be shifted if necessary and mutually compared in every comparison unit. The values in the registers of every comparison unit may be swapped based on the comparison. At output mode, the numerals are outputted sequentially. The values in the registers are shifted and swapped until all numerals are completely outputted. The output appears the sorted numerals with low timing latency.

Abstract: A method for signal estimation and compensation and an apparatus using the same, adapted for estimating and compensating an imbalance effect between an in-phase path and a quadrature path of an Orthogonal Frequency Division Multiplexing (OFDM) communication system are provided. The method includes the following steps: receiving a signal, and using a plurality of symbols in a plurality of time frame to generate a plurality of balance coefficient groups, wherein every balance coefficient group includes a plurality of balance coefficient candidates; deriving a balance coefficient according to the balance coefficient set; and compensating the signal according to the balance coefficient.

Abstract: A receiver with Inphase-Quadrature (I-Q) imbalance compensation and an I-Q imbalance compensation method thereof are provided. The receiver chooses a first receiving signal which includes a first data and a first noise, as well as a second receiving signal which includes a second data and a second noise from a plurality of receiving signals. The first data have a first positive frequency data and a first negative frequency data, while the second data have a second positive frequency data and a second negative frequency data. The receiver calculates an I-Q imbalance compensation parameter according to the first receiving signal and the second receiving signal, and compensates for a third receiving signal according to the I-Q imbalance compensation parameter. The I-Q imbalance compensation method is applied to the receiver to implement the aforesaid operations.

Abstract: Disclosure is related to a method for displaying a graphic interface with message/notification, an apparatus, and a computer-readable storage device. It is featured that a graphic interface is displayed on a screen of a mobile device for showing one or more messages/notifications in one limited area. This interface allows a user to preview the message before clicking the link. After that, the full content can be read while the link is opened. The method includes firstly parsing the received message/notification and retrieving the content, format, and the correlated software program. Based on numbers, formats and the correlated software programs of the messages, the content displayed onto a graphic interface is arranged. On the graphic interface, one or more preview content of the messages/notifications having profiles of specifying one or more software programs are provided for the user to click for viewing the full content.

Abstract: A receiver having Inphase-Quadrature (I-Q) imbalance compensation and an I-Q imbalance compensation method are provided. The receiver calculates a cross-ratio parameter according to a first ideal receiving value and a first ideal conjugate receiving mirror of a first receiving signal and a second ideal receiving value and a second ideal conjugate receiving mirror of a second receiving signal. The receiver calculates an I-Q imbalance compensation parameter according to the cross-ratio parameter, the first ideal receiving value, the first ideal conjugate receiving mirror, the second ideal receiving value, the second ideal conjugate receiving mirror, the first receiving signal and the second receiving signal. The receiver compensates a third receiving signal according to the I-Q imbalance compensation parameter.

Abstract: An all-digital clock generator includes a digitally-controlled clock generator and a processing unit. The digitally-controlled clock generator generates a clock signal in response to an enable signal and a digital signal. The processing unit has a frequency multiplier and a reference signal having a period, digitizes the period to generate a quantized signal, generates the digital signal according to the quantized signal and the frequency multiplier, and generates the enable signal according to the reference signal, the clock signal and the frequency multiplier.

Abstract: A MIMO detection method for a receiver in a MIMO system using N-QAM for modulation, the MIMO detection method including generating a plurality of symbol vector sets and a plurality of search radiuses, selecting a candidate symbol vector set corresponding to a highest level of a multilevel structure of N-QAM constellation, generating a search space corresponding to a lower level of the multilevel structure of N-QAM constellation according to the selected candidate symbol vector set, confirming which level the search space corresponds to, and generating a detection signal according to the search space when the level of the search space is the lowest level of the multilevel structure of the N-QAM constellation.

Abstract: A receiver having Inphase-Quadrature (I-Q) imbalance compensation and an I-Q imbalance compensation method thereof are provided. The receiver calculates a cross-ratio parameter according to a first ideal receiving value and a first ideal conjugate receiving mirror of a first receiving signal and a second ideal receiving value and a second ideal conjugate receiving mirror of a second receiving signal. The receiver calculates an I-Q imbalance compensation parameter according to the cross-ratio parameter, the first ideal receiving value, the first ideal conjugate receiving mirror, the second ideal receiving value, the second ideal conjugate receiving mirror, the first receiving signal and the second receiving signal. The receiver compensates a third receiving signal according to the I-Q imbalance compensation parameter.