Matches 151 - 200 out of 285 < 1 2 3 4 5 6 >
Match Document Document Title
6985811 Method and apparatus for real time clock (RTC) brownout detection  
A method and apparatus for real time clock brownout detection. A low power real time clock (RTC) operates continuously to keep time in a global positioning system (GPS) receiver while some receiver...
6982947 Method and device for decoding a code multiplex signal  
In order to select from a plurality of codes the correct code for decoding a code division multiplex signal, in each case individual codes are combined to form combination codes which are compared...
6977956 Pilot signal reception method and receiver  
The pilot signal reception method of the present invention irregularly receives pilot symbols. That is, the pilot signal reception method performs irregular reception processing such as randomizing...
6973119 Method and apparatus for recognizing a receiving path in a CDMA system  
A method and system are provided for recognizing a path having low level signals, which is conventionally treated as useless, as a valid receiving path. Recognition is made from a plurality of...
6965635 Matched filter and method for determining correlation  
The present invention relates to a correlation detection method using a matched filter. The correlation detection method of the present invention carries out a type of despreading calculation of...
6965630 Mode Controller for signal acquisition and tracking in an ultra wideband communication system  
A system and method for controlling the mode of operation in a UWB receiver. In one variation, the system and method determines the mode of operation by reading a set number of samples of the...
6965633 Pilot synchronization channel structure for CDMA mobile communication system  
The invention discloses a pilot synchronization channel structure for mobile communication systems. The channel structure includes a pilot channel overlapping a synchronization channel (SCH),...
6963599 Multitone frequency hop communications system  
An improved spread spectrum communications system is disclosed in which M-ary symbols are defined corresponding to each state of digital data to be transmitted and in which each of those M-ary...
6961362 Communication method and its power control method  
The purpose of the present invention is to offer a structure of a CDMA system having a power control method and interference cancellers which can effectively increase the system capacity and is...
6959055 Multi-stage automatic gain control for spread-spectrum receivers  
An apparatus and method for automatic gain control in spread-spectrum communications includes an automatic gain control apparatus for a spread-spectrum receiver, including a received signal...
6959035 Post-correlation interpolation for delay locked loops  
A Code Division Multiple Access (CDMA) post-correlation processing system ( 12 ) for delay locked loop processing reduces the control data rate into a delay locked loop (DLL) processor and the...
6954483 Method and device for synchronizing mobile radio receivers in a mobile radio system  
Mobile radio receivers in a mobile radio system are synchronized. A first synchronization channel is provided, which has a first frequency and via which a code which is known to all the mobile...
6940875 Continuously adjusted-bandwidth discrete-time phase-locked loop  
A reciever for receiving a CDMA communication signal that is wirelessly transmitted includes a system for correcting phase errors in an information signal which has been transmitted. The correction...
6934562 System for coupling a mobile radio service base station to an antenna  
Coupling one or more receivers and transmitters of a base station to an antenna in a cellular-like commercial mobile radio services (CMRS) system. The antenna is coupled to a receive path and to a...
6931053 Peak power and envelope magnitude regulators and CDMA transmitters featuring such regulators  
A peak power regulator is disclosed that functions within a Code Division Multiple Access (CDMA) transmitter to reduce peak power spikes within baseband signals, controlling the out-of-band...
6931051 Frequency hopping wireless communication system with filtered adaptive slicer  
A wireless communication network comprising a wireless receiver. The wireless receiver comprises at least a first antenna for receiving packets, wherein each of the received packets comprises a...
6925136 Simultaneous frequency and phase synchronizer  
A frequency and phase synchronizer system comprises a processor for executing a sequence of operations, which include: a) initializing a frequency error estimate value and phase error estimate...
6925105 Overhead reduction in system for intermittent transmission  
A radio transmission telemetry system includes many battery-operated radio transmitters to intermittently transmit very short messages indicative or status of sensors associated with the...
6920172 Dual purpose spread spectrum radio receivers with controlled frequency rejection  
A receiver for a direct sequence spread spectrum signal subject to interference from a locally transmitted or received frequency-hopped spread spectrum signal includes a programmable notch filter...
6917643 Diffusion code generator, CDMA communication apparatus using the same, and diffusion code generating method used therefor  
To provide a diffusion code generator capable of rendering interception and eavesdropping of communication difficult without influencing communication quality and transmission data. The spreading...
6853616 Orthogonal frequency division multiplexing receiver where FFT Window position recovery interlocks with sampling clock adjustment and method thereof  
An OFDM receiver for interlocking FFT window position recovery with sampling clock control, and a method thereof are provided. This method includes the steps of: extracting a pilot signal from...
6816538 Frequency hopping spread spectrum decoder  
The present invention is directed to a frequency hopping spread spectrum transceiver. The transceiver includes a microcontroller; a transmitter having a voltage controlled oscillator, a direct...
6810074 Apparatus and method for detecting a received on-off keying signal in a CDMA mobile communication system  
An apparatus for detecting an on-off keying signal in a CDMA mobile station device is disclosed. A first calculator receives an on-off keying signal and a reference signal transmitted from a base...
6795771 Method and apparatus for correlating a satellite signal with a reference code  
A method and apparatus for correlating a satellite signal with a reference code is described. In an example, samples of a satellite signal having a repeating code are received. At least one fast...
6782041 Radio receiver and method for identifying spreading codes  
A grouping setting section 206 controls spreading code generation sections 207 to input a plurality of long codes into an adder 208 one by one, and thereby the plural long codes are grouped....
6778589 Symbol synchronous device and frequency hopping receiver  
A symbol synchronous device is provided that can maintain symbol synchronization in short time in response to synchronous signals. The symbol synchronous device receives a synchronous signal at a...
6778831 Handover determination and power control adjustment in mobile communications systems with frequency hopping  
A device ( 5 ) for triggering a handover or for adjusting transmit power levels in a cellular communications system distinguishes between the use of a frequency hopping or a non-frequency hopping...
6771693 Enhanced rake structure  
A rake architecture for a frequency division duplex (FDD) and use also in TDD and TD-SCDMA type communications system, designed to significantly reduce the memory capacity required and thereby also...
6763057 Vector modulation system and method for wideband impulse radio communications  
An apparatus and method for communicating information using an ultra wideband impulse radio transmitter and receiver is disclosed. The method includes the steps of generating and transmitting a...
6754254 Control of transit power during out-of-lock condition  
When all of the fingers of a wireless rake receiver are “out-of-lock,” the transmit power is initially maintained at a constant level. When the “out-of-lock” condition persists for an...
6748005 Methods and apparatus for providing a direct frequency hopping wireless interface with a personal computer  
A system and method to provide cost effective, portable and convenient access to the Internet and other personal computer applications from any location within a predetermined distance from a...
6748031 Method of parameter estimation and receiver  
The invention relates to a method for parameter estimation in a digital radio system receiver, and a receiver. The receiver comprises a detector generating a number describing the probability of a...
6744806 Fast-synchronizing high-fidelity spread-spectrum receiver  
A fast-synchronizing receiver having a circuit including an equalizer configured for manipulating an analog signal; a detector in communication with the equalizer; a filter in communication with...
6741045 Bicycle control apparatus that communicates power and data over a single transmission path  
A bicycle control apparatus includes a bicycle component control unit having one of a control transmitter and a control receiver; a computer control unit having the other one of the control...
6735240 System and method of deskew buffering signals  
A deskew buffer 410 arrangement in a CDMA receiver allows for accurate combining of symbols from a plurality of demodulator fingers, 402 and 404 , without any symbol losses when the data rate...
6717992 Method and apparatus for receiving a plurality of time spaced signals  
A method and system for receiving time spaced signals transmitted in accordance with a time layout is provided. The time spaced signals may be pulses or bursts. The time spaced signals convey at...
6704322 Smart different prime code multiplexing system  
A smart different prime code multiplexing system. Using the characteristic that two different prime codes do not interfere with each other, these two prime codes are combined to replace the...
6704346 Method and apparatus to provide improved microwave interference robustness in RF communications devices  
A RF communications system and method having improved RF interference characteristics for use with at least a pair of RF transceivers which communicate using a packet transfer protocol, in a...
6678512 Receiver system using analog to digital conversion at radio frequency and method  
A receiver receives analog signals at radio frequency (RF), and the RF analog signals are converted into the digital domain. As such, the receiver does not require frequency conversion stage(s)...
6658236 Wireless apparatus with frequency synthesizers  
A wireless apparatus includes a transmitter and a receiver wherein each of the transmitter and the receiver includes a phase-locked loop (PLL) having a frequency synthesizer for generating a...
6654405 Methods and apparatus for use in performing dot product operations for spread spectrum communications  
A processing apparatus for use in spread spectrum communications includes a controller, a filter programmed in the controller, and a dot product hardware unit external from the controller having...
6647077 Multipath parameter estimation in spread-spectrum communications systems  
A training circuit includes resources for processing magnitude and phase information received in a main propagation path signal with magnitude and phase information concurrently received in a...
6625436 Radio receivers  
A heterodyne radio receiver, having a broadband IF, in which the outputs from the second down-conversion mixer of the receiver are high pass filtered to select unwanted signals and low pass...
6600926 Channel simulator for mobile systems  
A device and a method at a mobile communication system which provide a flexible and realistic way of emulating the time dispersive qualities and the broadband frequency correlation qualities of a...
6597725 Carrier phase follower and frequency hopping receiver  
A carrier phase follower is provided that can follow the carrier phase even when the carrier phase angle varies with respect to a reference frequency signal. Demodulation data is decided, without...
6570909 Interference suppression in a CDMA receiver  
A system and method for canceling interference present in a code-division multiple access (CDMA) channel signal received at a CDMA receiver that is caused by multipath components of a transmitted...
6560270 Method for tuning a spread spectrum receiver  
A method for tuning spread spread spectrum receivers to a frequency of a digital signal within a specified frequency band as the steps of coarse tuning the receiver while a preamble of the digital...
6560271 Pseudo noise code acquisition apparatus for direct sequence spread spectrum communications  
A pseudo noise code acquisition apparatus in a direct sequence spread spectrum receiver capable of minimizing a retard involved in the updating of a pseudo noise code sequence, thereby achieving a...
6549560 Comb limiter combiner for frequency-hopped communications  
A comb limiter combiner for frequency-hopped communications includes an input signal coupler for coupling to a receiving antenna and distributing the antenna signal to a bank of input bandpass...
6526090 Demodulation element assignment for a receiver capable of simultaneously demodulating multiple spread spectrum signals  
A method ( 32 ) of operating a spread spectrum communications receiver ( 20 ). The method demodulates a current path group with a demodulator ( 28 ), wherein the current path group comprises one or...
Matches 151 - 200 out of 285 < 1 2 3 4 5 6 >