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Browse by Category: Main > Communications
Class Information
Number: 375/142
Name: Pulse or digital communications > Spread spectrum > Direct sequence > End-to-end transmission system > Having correlation-type receiver
Description: Subject matter in which transmitted signals are recovered using a structure or method that compares a transmitted spreading code sequence with a local spreading code sequence, generally by multiplicative means.










Patents under this class:
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Patent Number Title Of Patent Date Issued
7327713 Multi-user detection in CDMA communications system Feb. 5, 2008
7324433 Method and apparatus for determining signal quality Jan. 29, 2008
7324579 Flexible distribution device and method for rake receiver of communication system Jan. 29, 2008
7324585 System and method for performing symbol boundary-aligned search of direct sequence spread spectrum signals Jan. 29, 2008
7321645 Method and arrangement for detecting a random access channel preamble using multiple antenna reception in a communication system Jan. 22, 2008
7319884 FM radio device and transmission power control method Jan. 15, 2008
7317749 Pilot signals for synchronization and/or channel estimation Jan. 8, 2008
7317753 Dynamic matched filter bank and its application in multi-channel spread spectrum communication systems Jan. 8, 2008
7317760 System and method for finger and path management in receivers Jan. 8, 2008
7315567 Method and apparatus for partial interference cancellation in a communication system Jan. 1, 2008
7315566 Mobile communication system, channel synchronization establishing method, and mobile station Jan. 1, 2008
7313169 CDMA demodulation circuit, CDMA mobile communication demodulation method used therefor, and storage medium recording program thereof Dec. 25, 2007
7308016 System and method for securing signals Dec. 11, 2007
7308019 System and method for Fast Walsh Transform processing in a multi-coded signal environment Dec. 11, 2007
7308022 Parameter estimator configured to distinguish between peaks and sidelobes of correlation function Dec. 11, 2007
7301993 Channel estimation in a spread spectrum receiver Nov. 27, 2007
7302020 Encoded multi-access bus system and method Nov. 27, 2007
7298777 Searching in a spread spectrum communications Nov. 20, 2007
7298776 Acquisition of a gated pilot signal with coherent and noncoherent integration Nov. 20, 2007
7292659 Correlating and aligning monitored signals for computer system performance parameters Nov. 6, 2007
7286593 System and method for channel estimation in a radio frequency receiver Oct. 23, 2007
7280582 Apparatus and method for sub-chip offset correlation in spread-spectrum communication systems Oct. 9, 2007
7280624 Method and apparatus for noise threshold calculation in wireless communication Oct. 9, 2007
7272169 Reverse link correlation filter in wireless communication systems Sep. 18, 2007
7269207 Method of symbol index selection in code division multiple access Sep. 11, 2007
7260370 Wireless communication system using a plurality of antenna elements with adaptive weighting and combining techniques Aug. 21, 2007
7260079 Method and apparatus for directional transmission of high bandwidth traffic on a wireless network Aug. 21, 2007
7257147 Encoding viterbi error states into single chip sequences Aug. 14, 2007
7251268 Rake receiver Jul. 31, 2007
7251300 Method and apparatus for frequency tracking based on recovered data Jul. 31, 2007
7236451 Dynamic time metered delivery Jun. 26, 2007
7233613 Synchronization establishing device, method of establishing synchronization, and receiver Jun. 19, 2007
7227884 Spread-spectrum receiver with progressive fourier transform Jun. 5, 2007
7224721 System for direct acquisition of received signals May. 29, 2007
7224716 Communication methods and apparatus employing spread spectrum techniques and doppler-tolerant polyphase codes May. 29, 2007
7224714 Method and apparatus for channel characterization in direct sequence spread spectrum based wireless communication systems May. 29, 2007
7215935 Segmented CDMA searching May. 8, 2007
7209525 Clock and data recovery with extended integration cycles Apr. 24, 2007
7203220 Method and rake receiver for code-tracking in communication systems Apr. 10, 2007
7197063 Advanced rake delay control Mar. 27, 2007
7190665 Blind crosstalk cancellation for multicarrier modulation Mar. 13, 2007
7187707 Synchronization code detecting apparatus for cell search in a CDMA system Mar. 6, 2007
7187940 Decorrelating rake receiver apparatus and method Mar. 6, 2007
7184496 Complementary code decoding by reduced sized circuits Feb. 27, 2007
7180961 Receiving device Feb. 20, 2007
7167504 System and method for fast data rate discovery from PN codes Jan. 23, 2007
7161977 Receiver having a ratio-based signal acquisition method Jan. 9, 2007
7154967 Methods and apparatus for efficient and accurate coarse timing synchronization in burst demodulators Dec. 26, 2006
7149266 Signal receiver and method of compensating frequency offset Dec. 12, 2006
7142584 Synchronizing a bash station and a mobile station Nov. 28, 2006

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