| Patent Number |
Title Of Patent |
Date Issued |
| RE38627 |
High capacity spread spectrum channel |
October 19, 2004 |
| A high-capacity-spread-spectrum transmitter and receiver, for use over a communications channel. A demultiplexer demultiplexes message data into a plurality of demultiplexed-data signals. A transmitter-generic-chip-code generator generates a generic-chip-code signal and a plurality of |
| RE35402 |
CDMA/TDMA spread-spectrum communications system and method |
December 17, 1996 |
| A spread-spectrum transmitter and receiver using code division multiple access with time division multiple access technology for spread-spectrum communications. At a base station, a spread-spectrum transmitter includes a multiplexer for time multiplexing a synchronization-code signal and |
| 7564808 |
Spread spectrum communication unit |
July 21, 2009 |
| A communication unit comprises a command signal generator for generating a command signal. A transmitter transmits communication signals at one of two frequencies and for transmitting the command signal. A receiver receives communication signals at one of the two frequencies and for |
| 7519098 |
Spread spectrum base station notch filtering transmitted signals |
April 14, 2009 |
| A base station is in a spread spectrum code division multiple access (CDMA) communication system with co-exists with a diverse system of existing users. The diverse system selectively utilizes various frequencies within a selected range of frequencies. The base station generates a pl |
| 7362793 |
Base station having a set of phased array antennas |
April 22, 2008 |
| A spread spectrum base station for receiving a plurality of spread spectrum signals and a plurality of phased spread spectrum signals includes an antenna and a plurality of delay devices connected to the antenna, each delay device outputting a time-delayed spread spectrum signal. A c |
| 7242675 |
Remote terminal spread spectrum CDMA subtractive interference canceller |
July 10, 2007 |
| A spread-spectrum code division multiple access interference canceller employed by a remote terminal for reducing interference in a direct sequence CDMA receiver having N chip-code channels. The interference canceller includes a plurality of correlators or matched filters, a pluralit |
| 7230938 |
Method employed by a base station for spread spectrum CDMA subtractive interference cancellation |
June 12, 2007 |
| A spread-spectrum code division multiple access interference cancellation method for a base station reduces interference in a direct sequence CDMA receiver having N chip-code channels. The interference canceller despreads the spread-spectrum CDMA signal as a plurality of despread sig |
| 7167464 |
Multichannel CDMA subtractive interference cancellation method employed by a remote unit |
January 23, 2007 |
| A method employed by a remote unit wherein a plurality of channels are received as a received signal. Each channel is associated with a code. For each of the plurality of channels, others of the plurality of channels are subtracted from the received signal and a result of that subtra |
| 7167462 |
Remote unit multichannel CDMA subtractive interference canceller |
January 23, 2007 |
| Apparatus employed by a remote unit wherein a plurality of channels are received as a received signal. Each channel is associated with a code. For each of the plurality of channels, others of the plurality of channels are subtracted from the received signal and a result of that subtr |
| 7164668 |
Base station multichannel CDMA subtractive interference canceller |
January 16, 2007 |
| Apparatus employed by a base station wherein a plurality of channels are received as a received signal. Each channel is associated with a code. For each of the plurality of channels, others of the plurality of channels are subtracted from the received signal and a result of that subt |
| 7161919 |
Multichannel CDMA subtractive interference cancellation method employed by a base station |
January 9, 2007 |
| A method employed by a base station wherein a plurality of channels are received as a received signal. Each channel is associated with a code. For each of the plurality of channels, others of the plurality of channels are subtracted from the received signal and a result of that subtr |
| 7142582 |
Receiving and selectively transmitting frequency hopped data signals using a plurality of antenn |
November 28, 2006 |
| A remote unit transmits data by Frequency hopping over a set of frequencies to a base station. A plurality of antennas at the base station receives the transmitted frequency hopped data. An optimal combining of each antenna's received hopped data for a particular frequency is determi |
| 7137548 |
Removable card for use in a radio unit |
November 21, 2006 |
| A cellular phone includes a first removable subscriber identification card which has a microprocessor and memory that stores subscriber identification information. The cellular phone also includes a card interface, a controller, that generates a personal access number from the subscr |
| 7099292 |
Spread spectrum communications using a reference and a message signal system and method |
August 29, 2006 |
| A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is combined as a combined signal. |
| 7054278 |
Spread-spectrum changeable base station |
May 30, 2006 |
| A base subunit receives a signal over a first frequency. A plurality of despread voice signals are produced using the received signal. The despread signals and a voice signal generated at the base subunit are combined. The combined signal is mixed with a chipping sequence. The mixed |
| 7027423 |
CDMA subtractive interference cancellation |
April 11, 2006 |
| A plurality of code division multiple access (CDMA) channel signals are received as a received signal. The received signal is despread using a code of a first channel of the plurality of CDMA channel signals to produce estimates of the first channel. The estimates of the first channe |
| 7020125 |
Broadband CDMA overlay system and method |
March 28, 2006 |
| A wireless communication system has spread spectrum and narrow band users. A selected base station produces a spread spectrum signal for transmission in a selected sector of the base station. The produced spread spectrum signal notch filters at frequencies. These frequencies are used |
| 7020114 |
Spread spectrum communication system and method using a reference signal and a plurality of mess |
March 28, 2006 |
| A spread spectrum communication system produces a reference signal. A plurality of message signals are produced. Each message signal has message data. The reference signal and the plurality of message signals are combined as a combined spread spectrum signal. The combined spread spec |
| 7012907 |
Packet spread-spectrum receiver |
March 14, 2006 |
| A spread-spectrum receiver for receiving data from a spread-spectrum packet-swioched system. A multichannel spread-spectrum signal includes encoded data, which is demultiplexed into sub-data-sequence signals. Each sub-data-sequence signal is multiplied by a respective chip-sequence s |
| 6940841 |
Packet-switched spread-spectrum system |
September 6, 2005 |
| A system and method for encoding and transmitting data with a spread-spectrum packet-switched system. Data to be transmitted by a packet transmitter are encoded for privacy and to restrict intelligent receipt of the data to the intended recipient. The encoded data is demultiplexed into |
| 6925071 |
Spread spectrum base station |
August 2, 2005 |
| A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is combined as a combined signal. |
| 6917601 |
Spread spectrum remote unit |
July 12, 2005 |
| A spread spectrum remote unit produces a message signal having message data. A reference signal is produced. The reference signal is used to recover the message data from a combined spread spectrum signal. The reference signal and the message signal is combined as a combined signal. |
| 6894997 |
Packet spread-spectrum transmitter |
May 17, 2005 |
| A system and method for encoding and transmitting data with a spread-spectrum packet-switched system. Data to be transmitted by a packet transmitter are encoded for privacy and to restrict intelligent receipt of the data to the intended recipient. The encoded data is demultiplexed into |
| 6876665 |
Method employed by a remote terminal for spread spectrum CDMA subtractive interference cancellat |
April 5, 2005 |
| A spread-spectrum code division multiple access interference cancellation method employed by a remote terminal reduces interference in a direct sequence CDMA receiver having N chip-code channels. The interference canceller despreads the spread-spectrum CDMA signal as a plurality of d |
| 6873643 |
Spread spectrum adaptive power control communications system and method |
March 29, 2005 |
| A spread spectrum communication system has a mobile station and a base station. The base station transmits a spread spectrum signal and a threshold. The mobile station receives the spread spectrum signal and the threshold. A received power level of the received spread spectrum signal |
| 6868078 |
Base station spread spectrum CDMA subtractive interference canceller |
March 15, 2005 |
| A spread-spectrum code division multiple access interference canceller for reducing interference in a direct sequence CDMA, employed at a base station receiver having N chip-code channels. The interference canceller includes a plurality of correlators or matched filters, a plurality of |
| 6868076 |
Multichannel CDMA subtractive interference canceler |
March 15, 2005 |
| A plurality of channels are received as a received signal. Each channel is associated with a code. For each of the plurality of channels, others of the plurality of channels are subtracted from the received signal and a result of that subtracting is despread as data for that channel. |
| 6726098 |
Performing local transactions using a wireless radio unit |
April 27, 2004 |
| A monetary amount is allocated to a user of a radio unit. The user initiates a wireless telephone call using the radio unit to engage in a local transaction other than for wireless telephone services. The user is permitted to engage in the local transaction based on in part the alloc |
| 6714583 |
Matched-filter obtained side information for spread-spectrum data detection |
March 30, 2004 |
| An improvement to a spread-spectrum receiver having a matched filter. A symbol sampler samples at the symbol time T.sub.S, a symbol sample from the matched filter. A noise sampler samples at a plurality of chip times kT.sub.C, but not at the symbol time T.sub.S, a plurality of noise samp |
| 6711145 |
Spread spectrum base station notch filtering transmitted signals |
March 23, 2004 |
| A spread spectrum base station generates a plurality of spread spectrum signals. The spread spectrum signals encompass a selected frequency spectrum. Frequencies within the selected frequency spectrum having a high microwave power are detected. The spread spectrum signals are notch f |
| 6563860 |
Base station having a set of phased array antennas |
May 13, 2003 |
| A spread spectrum base station has a set of phased array antennas for receiving a spread spectrum signal containing a plurality of channels. The base station outputs timed version of the received signal. Each timed version is associated with a respective one out of said set of phased |
| 6515981 |
Packet-switched spread-spectrum system |
February 4, 2003 |
| A system and method for encoding and transmitting data with a spread-spectrum packet-switched system. Data to be transmitted by a packet transmitter are encoded for privacy and to restrict intelligent receipt of the data to the intended recipient. The encoded data is demultiplexed into |
| 6512786 |
Matched-filter obtained side information for relative-signal-level data detection from a spread- |
January 28, 2003 |
| An improvement to a spread-spectrum receiver having a matched filter. A symbol sampler samples at the symbol time T.sub.S, a plurality of symbol samples from the matched filter. A relative-signal-level decoder decodes the plurality of received-symbol samples, generating a plurality of |
| 6507600 |
Frequency hopping code division multiple access system and method |
January 14, 2003 |
| The present invention is a communication system and method having a base station for communication with multiple remote units. The system comprises a base station which utilizes a plurality of sets of frequencies for selectively communicating with remote units in a predefined coverage ar |
| 6407989 |
Spread spectrum microwave overlay with notch filter |
June 18, 2002 |
| A base station is in a spread spectrum code division multiple access (CDMA) communication system which co-exists with a microwave system. The microwave system selectively utilizes various microwave frequencies within a selected range of frequencies. The base station generates a plurality |
| 6400756 |
Phased array spread spectrum receiver |
June 4, 2002 |
| A spread spectrum phased array receiver has a set of phased array antennas. The set of phased array antennas receive a spread spectrum signal containing a plurality of channels. The receiver outputs timed versions of the received signal. Each timed version is associated with a respective |
| 6396824 |
CDMA communications and geolocation system and method |
May 28, 2002 |
| A spread-spectrum CDMA communications system for locating remote units, and for communicating message data between a plurality of remote units and a base station. The spread-spectrum CDMA communications system includes a plurality of base stations and a plurality of remote units. A base |
| 6389002 |
Broadband CDMA overlay system and method |
May 14, 2002 |
| A spread-spectrum CDMA communications system for communicating data between a plurality of users to a plurality of spread-spectrum units. The spread-spectrum communications system is located within a same geographical region as occupied by an existing FDMA, proposed TDMA or any other |
| 6382507 |
Wireless telephone debit card system and method |
May 7, 2002 |
| A radio unit used in a wireless communication system. A card reader reads information from a card. The read information includes a read telephone number stored on the card. A transceiver transmits a signal including the read telephone number to a base station. The transceiver receives ca |
| 6366605 |
Spread-spectrum data detection using matched-filter obtained side information |
April 2, 2002 |
| An improvement to a spread-spectrum receiver at a bse station having a matched filter. A symbol sampler samples at the symbol time T.sub.s, a symbol sample from the matched filter. A noise sampler samples at a plurality of chip times kT.sub.c, but not at the symbol time T.sub.s, a pl |
| 6359925 |
Relative-signal-level data detection from a spread-spectrum signal using matched-filter obtained |
March 19, 2002 |
| An improvement to a spread-spectrum base station receiver having a matched filter. A symbol sampler samples at the symbol time T.sub.S, a plurality of symbol samples from the matched filter. A relative-signal-level decoder decodes the plurality of received-symbol samples, thereby generat |
| 6356534 |
Spread-spectrum changeable base station |
March 12, 2002 |
| A selected unit of a plurality of units receives data for others of the plurality of units over a first frequency. The selected unit mixes the received data from the other units with data of the selected unit. The selected unit transmits the mixed data over a second frequency. The other |
| 6353627 |
High data rate spread-spectrum system and method |
March 5, 2002 |
| A high data rate, high processing gain, direct sequence spread spectrum system that transmits a BPSK or QPSK signal. The system FEC encodes and interleaves data which are collected and stored and forwarded N bits at a time by transmitting one of 2.sup.N pseudo random waveforms every time |
| 6349110 |
Subsystem and method for combining spread-spectrum multipath signals |
February 19, 2002 |
| A subsystem and method for combining a spread-spectrum signal arriving from a plurality of paths. A header-matched filter detects each match of a header-chip-sequence signal with a first impulse response and, in response to the detection, outputs a header-detection signal having a header |
| 6327297 |
Frequency hopping code division multiple access system and method |
December 4, 2001 |
| A subscriber unit communicates with a base station in the communication system. The base station uses a group of frequencies within a predetermined coverage area. The coverage area is divided into N concentric regions which in turn are divided into M sectors to define M.times.N conce |
| 6295288 |
Spread-spectrum changeable base station |
September 25, 2001 |
| A conference calling spread-spectrum communications system and method using a plurality of spread-spectrum units, any one of which may serve as the base station and where the base station may be changed from one spread-spectrum unit to another upon command. Each spread-spectrum unit |
| 6290127 |
Wireless telephone debit card system and method |
September 18, 2001 |
| A wireless debit card communications system comprising a radio unit, a base station, and an end station. The radio unit, for example, a radio telephone, includes a first processor, a reader for reading a credit amount and a personal access number from a debit card, and a transceiver |
| 6262971 |
Multichannel spread-spectrum packet |
July 17, 2001 |
| Encoding and transmitting packet-switched, spread-spectrum data. Data are encoded for privacy and to restrict intelligent receipt of the data to the intended recipient. The encoded data are demultiplexed into sub-data-sequence signals. The sub-data-sequence signals are spread-spectru |
| 6259688 |
Spread spectrum CDMA subtractive interference canceler system |
July 10, 2001 |
| A spread spectrum code division multiple access interference canceler for reducing interference in a direct sequence CDMA receiver having N chip-code channels. The interference canceler includes a plurality of correlators or matched filters, a plurality of spread-spectrum-processing |
| 6256340 |
Phased array spread spectrum system and method5 |
July 3, 2001 |
| A phased array spread spectrum system for maximizing signal strength of a spread-spectrum signal with multipath through the use of receiving means, delaying means, combining means, despreading means, generating means, storing means and comparing means. The receiving means receives a |
