| Patent Number |
Title Of Patent |
Date Issued |
| RE40564 |
Cellular communications system with sectorization |
November 4, 2008 |
| A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit wh |
| 7610046 |
System and method for enhancing the performance of wideband digital RF transport systems |
October 27, 2009 |
| A system and method for enhancing the performance of wideband digital RF transport systems is disclosed, which enables the transport of different bandwidth segments on a plurality of wideband channels by selecting an optimal clock sample rate for each bandwidth segment to be transported. |
| 7603093 |
System and method to monitor broadband radio frequency transport systems |
October 13, 2009 |
| A system to monitor gain in a broadband radio frequency transport system that includes a radio frequency antenna, a remote unit, and a host unit adapted to receive a signal from the remote unit over a transmission link. The remote unit includes a pilot tone generator adapted to generate |
| 7554946 |
Dynamic reallocation of bandwidth and modulation protocols |
June 30, 2009 |
| Systems for dynamic reallocation of bandwidth and modulation protocols is provided. In one embodiment, a radio head interface module comprises: a transmit buffer adapted to receive a data stream from a signal processing module and store the data stream as a page of data samples having a |
| 7539509 |
Small signal threshold and proportional gain distributed digital communications |
May 26, 2009 |
| An apparatus for gain distribution in a system comprising a plurality of distributed antennas and a total system dynamic range is disclosed. The apparatus includes means for sensing a signal level at each of the plurality of distributed antennas, means for comparing at least one of t |
| 7103377 |
Small signal threshold and proportional gain distributed digital communications |
September 5, 2006 |
| A method for signal gain adjustment in a multi-port, digital distributed antenna system uses a sorter to sort received signals in ascending order according to their signal levels. A threshold comparator generates a dynamic range fair threshold that is updated as any remaining system |
| 6836660 |
Methods and systems for communicating in a cellular network |
December 28, 2004 |
| A microcellular communications network includes a plurality of base station units and corresponding antenna units. The microcells connected to their respective base station units over a telephone system. The microcells providing received signal strength indication (RSSI) level signals an |
| 6704545 |
Point-to-multipoint digital radio frequency transport |
March 9, 2004 |
| A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultan |
| 6112086 |
Scanning RSSI receiver system using inverse fast fourier transforms for a cellular communication |
August 29, 2000 |
| A microcellular communications network includes a plurality of base station units and corresponding antenna units. The microcells connected to their respective base station units over a telephone system. The microcells providing received signal strength indication (RSSI) level signals an |
| 5852651 |
Cellular communications system with sectorization |
December 22, 1998 |
| A method and apparatus for sectorizing coverage of a cellular communications area includes providing a remote unit having microcell antenna units. Each microcell antenna unit is configured to cover a particular sector. The remote unit is connected to a sectorized base station unit wh |
| 5657374 |
Cellular communications system with centralized base stations and distributed antenna units |
August 12, 1997 |
| A method of communicating a plurality of two-way inbound/outbound cellular telephone transmissions between a base station and a physically remote cell using a set of channels. At the base station, a plurality of outbound telephone transmissions, received from a network, are analog modula |
| 5642405 |
Cellular communications system with centralized base stations and distributed antenna units |
June 24, 1997 |
| A microcellular communications network includes a plurality of base station units and corresponding antenna units. Each includes either conventional transmitters and receivers or all digital transmitter and receiver equipment, and interface circuitry to a mobile telecommunications sw |
| 5627879 |
Cellular communications system with centralized base stations and distributed antenna units |
May 6, 1997 |
| A microcellular communications network includes a plurality of base station units and corresponding antenna units. The base station units are housed in a common location. Each includes either conventional transmitters and receivers or all digital transmitter and receiver equipment, and i |
| 5621786 |
Cellular communications system having passive handoff |
April 15, 1997 |
| A passive handoff cellular communication system includes a cell divided into a plurality of zones. A base station is connected by transmission apparatus to a plurality of antenna units. The base station includes analog RF signal generation circuitry for generating a plurality of RF s |
| 5212714 |
High speed data interface for land mobile communication system |
May 18, 1993 |
| A high speed data interface unit that is fully compatible with existing, trunked, land mobile voice transceivers is provided. Data rates of up to 4800 baud using bilevel modulation are achievable without the use of dedicated data transceivers, or the designation of a dedicated data c |
