US Patent No: 6,831,905
Number of patents in Portfolio can not be more than 2000
Spread spectrum system assigning information signals to message-code signals
Stats
-
Dec 14, 2004
Issued date -
Aug 9, 2000
filing date -
09/634,400
serial no -
In Force
status
Importance
Loading Importance Indicators...
Abstract
A spread spectrum system having an assignor, a spread-spectrum processor and a transmitter. The assignor assigns each arriving information signal to a message-code signal. Each message-code signal is different then other message-code signals. The spread-spectrum processor generates a pilot code signal and processes the information signals with the message-code signals to generate spread-spectrum process-message signals synchronized to the pilot-code signal. A transmitter combines the spread-spectrum process-message signals and the pilot-code signal to generate a CDM signal. The transmitter modulates the CDM signal with a carrier signal for transmission over the communications channel.
Loading the Abstract Image...
First Claim
Related Publications
Loading Related Publications...
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art
| Patent Info | (Count) | # Cites | Year |
|---|---|---|---|
|
|
|||
| 4,901,307 Spread spectrum multiple access communication system using satellite or terrestrial repeaters | 1332 | 1986 | |
| 5,056,109 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system | 811 | 1989 | |
| 5,109,390 Diversity receiver in a CDMA cellular telephone system | 734 | 1989 | |
| 5,193,094 Method and apparatus for generating super-orthogonal convolutional codes and the decoding thereof | 81 | 1990 | |
| 5,103,459 System and method for generating signal waveforms in a CDMA cellular telephone system | 1489 | 1990 | |
| 5,265,119 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system | 383 | 1991 | |
| 5,257,283 Spread spectrum transmitter power control method and system | 288 | 1991 | |
| 5,267,262 Transmitter power control system | 418 | 1991 | |
| 5,416,797 System and method for generating signal waveforms in a CDMA cellular telephone system | 353 | 1992 | |
| 5,392,287 Apparatus and method for reducing power consumption in a mobile communications receiver | 236 | 1992 | |
| 5,309,474 System and method for generating signal waveforms in a CDMA cellular telephone system | 295 | 1992 | |
| 5,228,054 Power-of-two length pseudo-noise sequence generator with fast offset adjustment | 119 | 1992 | |
| 5,396,516 Method and system for the dynamic modification of control paremeters in a transmitter power control system | 215 | 1993 | |
| 5,283,536 High dynamic range closed loop automatic gain control circuit | 52 | 1993 | |
| 5,414,728 Method and apparatus for bifurcating signal transmission over in-phase and quadrature phase spread spectrum communication channels | 226 | 1993 | |
| 5,485,486 Method and apparatus for controlling transmission power in a CDMA cellular mobile telephone system | 252 | 1994 | |
| 5,691,974 Method and apparatus for using full spectrum transmitted power in a spread spectrum communication system for tracking individual recipient phase, time and energy | 167 | 1995 | |
| 5,568,483 Method and apparatus for the formatting of data for transmission | 91 | 1995 | |
| 5,710,768 Method of searching for a bursty signal | 90 | 1995 | |
| 5,675,581 Simulating user interference in a spread spectrum communication network | 78 | 1996 | |
| 5,881,368 Method and apparatus of power control in a CDMA dispatch system | 90 | 1996 | |
|
|
|||
| 5,093,840 Adaptive power control for a spread spectrum transmitter | 191 | 1990 | |
| 5,228,056 Synchronous spread-spectrum communications system and method | 228 | 1990 | |
| 5,166,951 High capacity spread spectrum channel | 119 | 1991 | |
| 5,299,226 Adaptive power control for a spread spectrum communications system and method | 98 | 1991 | |
| 5,224,120 Dynamic capacity allocation CDMA spread spectrum communications | 132 | 1992 | |
| 5,367,533 Dynamic capacity allocation CDMA spread spectrum communications | 43 | 1993 | |
| 5,420,896 Synchronous spread-spectrum communications system and method | 57 | 1993 | |
| 5,365,544 CDMA communications and geolocation system and method | 107 | 1994 | |
| 5,506,864 CDMA communications and geolocation system and method | 107 | 1994 | |
| 5,796,776 Code sequence generator in a CDMA modem | 85 | 1996 | |
| 6,049,535 Code division multiple access (CDMA) communication system | 90 | 1997 | |
| 6,272,168 Code sequence generator in a CDMA modem | 105 | 1998 | |
| 6,381,264 Efficient multipath centroid tracking circuit for a code division multiple access (CDMA) system | 21 | 1999 | |
| 6,721,301 Centroid tracking for spread-spectrum communications | 26 | 2001 | |
|
|
|||
| 5,870,378 Method and apparatus of a multi-code code division multiple access receiver having a shared accumulator circuits | 65 | 1996 | |
| 5,881,056 Method and apparatus of a multi-code code division multiple access receiver having shared accumulator circuits | 61 | 1996 | |
| 6,434,124 Adaptive symbol error count based technique for CDMA reverse link outer loop power control | 31 | 1998 | |
| 6,141,374 Method and apparatus for generating multiple matched-filter PN vectors in a CDMA demodulator | 65 | 1998 | |
| 6,549,565 Code division multiple access system and method of operation with improved signal acquisition and processing | 26 | 1999 | |
|
|
|||
| 5,241,690 Method for regulating power in a digital mobile telephony system | 132 | 1991 | |
| 5,295,152 TDMA for mobile access in a CDMA system | 107 | 1992 | |
| 5,420,864 Method of effecting random access in a mobile radio system | 84 | 1993 | |
| 5,341,397 CDMA frequency allocation | 65 | 1993 | |
| 6,519,461 Channel-type switching from a common channel to a dedicated channel based on common channel load | 76 | 1999 | |
|
|
|||
| 5,519,736 Synchronous pseudo-noise code sequence generation circuit | 53 | 1994 | |
| 5,528,624 DS/CDMA receiver using parallel-operating multi-purpose correlators | 65 | 1994 | |
| 5,812,593 De-spread code phase detection apparatus in spread spectrum type receiver | 65 | 1995 | |
| 6,104,748 Spread spectrum signal receiving apparatus | 34 | 1996 | |
|
|
|||
| 5,353,352 Multiple access coding for radio communications | 138 | 1992 | |
| 5,430,760 Random access in mobile radio telephone systems | 180 | 1994 | |
| 5,377,183 Calling channel in CDMA communications system | 122 | 1994 | |
|
|
|||
| 5,327,467 Code distribution multiple access communication system with user voice activated carrier and code synchronization | 47 | 1991 | |
| 5,327,455 Method and device for multiplexing data signals | 189 | 1993 | |
|
|
|||
| 5,875,400 Cellular mobile communications system | 58 | 1995 | |
| 5,828,662 Medium access control scheme for data transmission on code division multiple access (CDMA) wireless systems | 105 | 1996 | |
|
|
|||
| 5,442,662 Code-division multiple-access communication system providing enhanced capacity within limited bandwidth | 125 | 1994 | |
| 5,627,835 Artificial window size interrupt reduction system for CDMA receiver | 40 | 1995 | |
|
|
|||
| 5,237,586 Rake receiver with selective ray combining | 181 | 1992 | |
| 5,345,598 Duplex power control system in a communication network | 124 | 1992 | |
|
|
|||
| 5,673,286 Spread spectrum multipath processor system and method | 62 | 1995 | |
| 5,790,591 Spread spectrum transmitter and communications system using multiple spreading codes | 67 | 1995 | |
|
|
|||
| 5,299,228 Method and apparatus of reducing power consumption in a CDMA communication unit | 137 | 1992 | |
| 5,365,585 Method and apparatus for encryption having a feedback register with selectable taps | 63 | 1993 | |
|
|
|||
| 5,204,876 Method and apparatus for providing high data rate traffic channels in a spread spectrum communication system | 151 | 1991 | |
| 5,245,629 Method for compensating for capacity overload in a spread spectrum communication system | 129 | 1991 | |
|
|
|||
| 5,440,597 Double dwell maximum likelihood acquisition system with continuous decision making for CDMA and direct spread spectrum system | 105 | 1993 | |
| 5,654,980 Method for controlling a receiver, and a receiver | 56 | 1995 | |
|
|
|||
| 5,414,729 Pseudorandom noise ranging receiver which compensates for multipath distortion by making use of multiple correlator time delay spacing | 193 | 1993 | |
| 5,692,008 Apparatus for estimating a line of sight signal propagation time using a reduced-multipath correlation function | 56 | 1995 | |
|
|
|||
| 5,652,765 Receiver and repeater for spread spectrum communications | 59 | 1995 | |
| 5,638,362 Correlation detector and communication apparatus | 75 | 1995 | |
|
|
|||
| 5,321,721 Spread spectrum communication system and transmitter-receiver | 50 | 1992 | |
| 5,644,590 Spread spectrum communication apparatus and signal intensity detection apparatus | 41 | 1995 | |
|
|
|||
| 5,430,724 TDMA on a cellular communications system PCM link | 52 | 1993 | |
| 6,292,519 Correction of signal-to-interference ratio measurements | 69 | 1998 | |
|
|
|||
| 5,373,502 Process, transmitter and receiver for data transmission with variable traffic volume and a control station for coordinating several such transmitters and receivers | 177 | 1993 | |
|
|
|||
| 5,361,276 All digital maximum likelihood based spread spectrum receiver | 146 | 1993 | |
|
|
|||
| 6,018,528 System and method for optimizing spectral efficiency using time-frequency-code slicing | 144 | 1994 | |
|
|
|||
| 5,446,756 Integrated cellular communications system | 314 | 1993 | |
|
|
|||
| 5,574,754 Sliding correlator | 52 | 1995 | |
|
|
|||
| 6,587,447 Method and system for performing outer loop power control in discontinuous transmission mode | 41 | 1999 | |
|
|
|||
| 5,559,790 Spread spectrum communication system and transmission power control method therefor | 118 | 1995 | |
|
|
|||
| 5,349,606 Apparatus for multipath DSSS communications | 53 | 1992 | |
|
|
|||
| 5,084,900 Spread spectrum system with random code retransmission | 77 | 1989 | |
|
|
|||
| 5,627,855 Programmable two-part matched filter for spread spectrum | 51 | 1995 | |
|
|
|||
| 5,396,539 Cellular data overlay system for storing data identifying selected data allocated channels | 122 | 1993 | |
|
|
|||
| 4,403,322 Voice signal converting device | 71 | 1981 | |
|
|
|||
| 5,448,600 Method for selecting propagation paths retained for receiving messages transmitted by CDMA radiocommunication | 75 | 1994 | |
|
|
|||
| 5,488,629 Signal processing circuit for spread spectrum communications | 91 | 1994 | |
|
|
|||
| 5,216,692 Method and apparatus for adjusting a power control threshold in a communication system | 98 | 1992 | |
|
|
|||
| 5,420,850 Mobile station and cell selecting method for code division multiplex access mobile communication | 68 | 1994 | |
|
|
|||
| 5,619,526 CDMA base station modulator for digital cellular mobile communication systems | 57 | 1994 | |
|
|
|||
| 5,404,376 Navigation assistance for call handling in mobile telephone systems | 145 | 1993 | |
|
|
|||
| 5,872,810 Programmable modem apparatus for transmitting and receiving digital data, design method and use method for said modem | 159 | 1996 | |
|
|
|||
| 6,654,613 Device and method of continuous outer-loop power control in DTX mode for CDMA mobile communication system | 53 | 2000 | |
|
|
|||
| 5,260,967 CDMA/TDMA spread-spectrum communications system and method | 142 | 1992 | |
|
|
|||
| 4,320,513 Electric circuit for the production of a number of different codes | 50 | 1972 | |
|
|
|||
| 5,166,952 Method and apparatus for the reception and demodulation of spread spectrum radio signals | 160 | 1990 | |
|
|
|||
| 5,341,396 Multi-rate spread system | 149 | 1993 | |
|
|
|||
| 5,347,536 Multipath noise reduction for spread spectrum signals | 198 | 1993 | |
|
|
|||
| 5,966,403 Code multipath error estimation using weighted correlations | 49 | 1996 | |
|
|
|||
| 5,022,049 Multiple access code acquisition system | 90 | 1989 | |
|
|
|||
| 5,253,268 Method and apparatus for the correlation of sample bits of spread spectrum radio signals | 148 | 1991 | |
|
|
|||
| 5,781,584 Code acquisition and tracking circuit using switched matched filter and sliding correlators | 33 | 1996 | |
Patent Citation Ranking
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Jun 14, 2016 |
| Fee | Large entity fee | small entity fee | micro entity fee |
|---|---|---|---|
| Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
| Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
| Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |