Title translation:SCHALTUNG ZUR ASYNCHRONEN解调VONBINÄRPHASENUMTASTUNGSMODULATION麻省理工学院EXTREM NIEDRIGER LEISTUNGSAUFNAHME UNTER VERWENDUNG VON SEITENBANDFILTERN ERSTER ORDNUNG,死EINER NULL GRAD-PHASE AUSGERICHTET SIND
Abstract:
An embodiment of the present invention relates to an ultra low power wideband asynchronous binary phase shift keying (BPSK) demodulation method and a circuit configuration thereof. Provided is an ultra low power wideband asynchronous BPSK demodulation circuit configured by comprising: a sideband division and upper sideband signal delay unit dividing a modulated signal into an upper sideband and a lower sideband by a first order high-pass filter and a first order low-pass filter of which a cutoff frequency is a carrier frequency, so as to output an analog signal delayed by a ¼ period of the carrier frequency from an upper sideband analog signal, and a lower sideband analog signal; a data demodulation unit latching, through a hysteresis circuit, a signal generated by a difference between the analog signals in which a phase difference between the delayed upper sideband analog signal and the lower sideband analog signal is aligned at 0°, that is, an analog pulse signal indicated according to a phase shift part of a BPSK modulation signal, so as to demodulate digital data; and a data clock recovery unit for generating a data clock by using a signal digitalized from the lower sideband analog signal through a comparator and a data signal.
Abstract:
A multiple access technique for a wireless communication system establishes separate channels by defining different time intervals for different channels. In a transmitted reference system different delay periods may be defined between transmitted reference pulses and associated data pulses for different channels. In addition, a multiple access technique may employ a common reference pulse for multiple channels in a transmitted reference system. Another multiple access technique assigns different pulse repetition periods to different channels. One or more of these techniques may be employed in an ultra-wide band system.
Abstract:
Aspects include methods and apparatuses for generating pulses in an ultra-wideband transmission. For example, some aspects include a method of providing a signal comprising at least one pulse. The method includes generating a first signal, generating at least one pulse based on at least one slope of said first signal, and transmitting said at least one pulse over a wireless channel. Other aspects include apparatus and devices for generating pulses.
Abstract:
Apparatus and methods to optimize ultra-wideband communication through wire and cable media are provided. One apparatus comprises an ultra- wideband transmitter structured to transmit a training set of ultra- wideband pulses through the wire medium (10). An ultra-wideband receiver is structured to receive the training set of ultra-wideband pulses from the wire medium (20). A determination of which of the pulses within the training set is best suited for communication through the media is then performed (30). This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.
Abstract:
Apparatus and methods to optimize ultra-wideband communication through wire and cable media are provided. One apparatus comprises an ultra- wideband transmitter structured to transmit a training set of ultra- wideband pulses through the wire medium (10). An ultra-wideband receiver is structured to receive the training set of ultra-wideband pulses from the wire medium (20). A determination of which of the pulses within the training set is best suited for communication through the media is then performed (30). This Abstract is provided for the sole purpose of complying with the Abstract requirement rules that allow a reader to quickly ascertain the subject matter of the disclosure contained herein. This Abstract is submitted with the explicit understanding that it will not be used to interpret or to limit the scope or the meaning of the claims.
Abstract:
PROBLEM TO BE SOLVED: To provide multiple access techniques for a wireless communication system.SOLUTION: A multiple access technique establishes separate channels by defining different time intervals for different channels. In a transmitted reference system, different delay periods may be defined between transmitted reference pulses and associated data pulses for different channels. In addition, a multiple access technique may employ a common reference pulse for multiple channels in a transmitted reference system. Another multiple access technique assigns different pulse repetition periods to different channels. One or more of these techniques may be employed in an ultra-wide band system.
Abstract:
PROBLEM TO BE SOLVED: To provide a method and apparatus for adaptively determining a delay time between reference and data pulses according to a present state of a wireless channel between two transceivers in a transmission criterion impulse radio system. SOLUTION: The method determines a delay time between reference and data pulses in a time-hopping impulse radio system. Channel state information of a channel between two transceivers is estimated periodically. The delay time frame between the reference and data pulses is then determined according to the channel state information. COPYRIGHT: (C)2006,JPO&NCIPI