Claims
- 1. A personal communications network unit for use in a spread spectrum code division multiple access (CDMA) communication system which co exists with a diverse communications system, the diverse communications system selectively utilizing various frequencies within a selected range of frequencies, the unit comprising:
means for generating a spread spectrum CDMA data signal using a pseudo random chip code sequences the spread data signal encompassing the selected range; means for notch filtering the spread data signal at frequencies within the selected range used by the diverse communications system; and means for transmitting the notch filtered spread data signal to a base station.
- 2. The unit of claim 1 further comprising means for determining frequencies currently used by the diverse communications system that have a spectrum overlapping a spectrum of the spread data signal; wherein the notch filtering is at the determined frequencies.
- 3. The unit of claim 2 further comprising means for detecting received signal power associated with the overlapping frequencies; wherein the determining of the overlapping frequencies is based on in part the detected received power.
- 4. The unit of claim 2 wherein each of the overlapping frequencies has an associated bandwidth, the unit further comprising:
means for determining the bandwidth for each of the overlapping frequencies; wherein the notch filtering filters a bandwidth at each of the overlapping frequencies based on in part that frequency's determined bandwidth.
- 5. The unit of claim wherein the unit further comprises:
means for receiving a command indicating the overlapping frequencies transmitted from the base station; wherein the determining of the overlapping frequencies is based on in part the received command.
- 6. The unit of claim 1 further comprising:
means for receiving a base spread spectrum CDMA data signal and recovering data from the base data signal; wherein the base data signal being notched filtered at the frequencies within the selected range.
- 7. The unit of claim 6 further comprising:
means for notch filtering the received base data signal at the frequencies within the selected range prior to the recovering of data.
- 8. The unit of claim 7 further comprising means for determining frequencies currently used by the diverse communications system that have a spectrum overlapping a spectrum of the spread data signal and received base CDMA data signal; wherein the notch filtering of the spread data signal is at the overlapping frequencies and the notch filtering of the received base data signal is at the overlapping frequencies.
- 9. The unit of claim 8 further comprising means for detecting a received signal power associated with the overlapping frequencies wherein the determining of the overlapping frequencies is based on in part the detected received signal power.
- 10. The unit of claim 8 wherein each of the overlapping frequencies has an associated bandwidth, the unit further comprising:
means for determining the bandwidth for each of the overlapping frequencies; wherein the notch filtering of the spread data signal and the base data signal filters a bandwidth of each of the overlapping frequencies based on in part that frequency's determined bandwidth.
- 11. The unit of claim 8 wherein the unit further comprises:
means for receiving a command indicating the overlapping frequencies transmitted from the base station; wherein the determining of the overlapping frequencies is based on in part the received command.
- 12. A personal communications network unit for use in a spread spectrum code division multiple access (CDMA) communication system which co exists with a diverse communications system, the frequencies within a selected range of frequencies, the unit comprising:
a mixer for mixing a data signal with a pseudo random chip code sequence to generate a spread spectrum CDMA data signal, the spread data signal encompassing the selected range of frequencies; an adaptive notch filter for notch filtering the spread data signal at frequencies within the selected range used by the diverse communications system; and an antenna for transmitting to a base station the notch filtered spread data signal.
- 13. The unit of claim 12 further comprising a sensor detecting a received signal power associated with the frequencies that have a spectrum overlapping a spectrum of the spread data signal, the detected received signal power used to determine the overlapping frequencies; wherein the adaptive notch filtering is at the determined frequencies.
- 14. The unit of claim 12 wherein the antenna receives a command transmitted from the base station indicating the overlapping frequencies and the adaptive notch filtering is at the indicated overlapping frequencies.
- 15. The unit of claim 12 further comprising a controller operatively coupled to the adjustable notch filter for controlling the adjustable notch filter to filter at the frequencies used by the diverse communications system.
- 16. The unit of claim 12 further comprising a local oscillator for modulating the notch filtered spread data signal to radio frequency.
- 17. The unit of claim 12 wherein the antenna receives a base station spread spectrum CDMA data signal; wherein the base data signal being notch filtered at the frequencies within the selected range.
- 18. The unit of claim 17 further comprising:
a despreader for despreading the base data signal; a bandpass filter for filtering the despread base data signal; and a detector for detecting data within the despread base filtered data signal.
- 19. A personal communications network unit for use in a spread spectrum code division multiple access (CDMA) communication system which co exists with a diverse communications system, the diverse communications system selectively utilizing various frequencies within a selected range of frequencies, the unit comprising:
a modulator for converting a data signal into a format suitable for communicating over radio waves; a spread spectrum modulator for spreading the converted data signal using a pseudo random code sequence; and a transmitter for transmitting the spread data signal over a spectrum encompassing the selected range of frequencies; whereby at a base station data is recovered from the transmitted spread data signal by notch filtering at the frequencies within the selected range.
- 20. A base station for use in a spread spectrum code division multiple access (CDMA) communication system which co exists with a diverse communications system, the diverse communications system selectively utilizing various frequencies within a selected range of frequencies, the base station comprising:
means for generating a plurality of spread spectrum CDMA data signals using pseudo random chip code sequences, the spread data signals encompassing the selected range; means for notch filtering the spread data signals at frequencies within the selected range used by the diverse communications system; and means for transmitting the notch filtered spread data signals to personal communication network units.
- 21. The base station of claim 20 further comprising means for determining frequencies currently used by the diverse communications system that have a spectrum overlapping a spectrum of the spread data signal; wherein the notch filtering is at the determined frequencies.
- 22. The base station of claim 21 further comprising means for detecting a received signal power associated with the overlapping frequencies; wherein the determining of the overlapping frequencies is based on in part the detected received signal power.
- 23. The base station of claim 21 wherein each of the overlapping frequencies has an associated bandwidth, the unit further comprising:
means for determining the bandwidth for each of the overlapping frequencies; wherein the notch filtering filters a bandwidth at each of the overlapping frequencies based on in part that frequency's determined bandwidth.
- 24. The base station of claim 20 further comprising:
means for receiving a plurality of unit spread spectrum CDMA data signals and recovering data from the unit data signals; wherein the unit data signals being notch filtered at the frequencies within the selected range.
- 25. The base station of claim 24 further comprising:
means for notch filtering the received unit data signals at the frequencies within the selected range prior to the recovering of data.
- 26. The base station of claim 25 further comprising means for determining frequencies currently used by the diverse communications system that have a spectrum overlapping a spectrum of the spread data signals and received unit CDMA data signals; wherein the notch filtering of the spread data signals is at the overlapping frequencies and the notch filtering of the received unit data signals is at the overlapping frequencies.
- 27. The base station of claim 26 further comprising means for detecting a received signal power associated with the overlapping frequencies wherein the determining of the overlapping frequencies is based on in part the detected received signal power.
- 28. The base station of claim 26 wherein each of the overlapping frequencies has an associated bandwidth, the unit further comprising:
means for determining the bandwidth for each of the overlapping frequencies; wherein the notch filtering of the spread data signal and the base data signal filters a bandwidth of each of the overlapping frequencies based on in part that frequency's determined bandwidth.
- 29. A base station for use in a spread spectrum code division multiple access (CDMA) communication system which co exists with a diverse communications system, the frequencies within a selected range of frequencies, the base station comprising:
a plurality of mixers for mixing data signals with pseudo random chip code sequences to generate a plurality of spread spectrum CDMA data signals, the spread data signals encompassing the selected range of frequencies; a plurality of adaptive notch filters for notch filtering the spread data signals at frequencies within the selected range used by the diverse communications system; and an antenna for transmitting to personal communication network units the combined signal.
- 30. The base station of claim 29 further comprising a sensor detecting a received signal power associated with the frequencies that have a spectrum overlapping a spectrum of the spread data signal, the detected received signal power used to determine the overlapping frequencies; wherein the adaptive notch filtering is at the determined frequencies.
- 31. The base station of claim 29 further comprising a controller operatively coupled to the adjustable notch filters for controlling the adjustable notch filters to filter at the frequencies used by the diverse communications system.
- 32. The base station of claim 29 further comprising a plurality of local oscillators for modulating the notch filtered spread data signals to radio frequency.
- 33. The base station of claim 29 wherein the antenna receives a plurality of unit spread spectrum CDMA data signals; wherein the unit data signals being notch filtered at the frequencies within the selected range.
- 34. The base station of claim 33 further comprising:
a plurality of despreaders for despreading the unit data signals; a plurality of bandpass filters for filtering the despread unit data signals; and a plurality of detectors for detecting data within the despread unit filtered data signals.
- 35. The base station of claim 29 further comprising a sensor detecting a received signal power associated with the frequencies that have a spectrum overlapping a spectrum of the spread data signal, the detected received signal power used to determine the overlapping frequencies; wherein the adaptive notch filtering results in the spread RF data signals being filtered at the determined frequencies.
- 36. The base station of claim 29 further comprising a controller operatively coupled to the adjustable notch filters for controlling the adjustable notch filters.
- 37. The base station of claim 29 wherein the antenna receives a plurality of unit spread spectrum CDMA data signals; wherein the unit data signals being notch filtered at the frequencies within the selected range.
- 38. A base station for use in a spread spectrum code division multiple access (CDMA) communication system which co exits with a diverse communications system, the frequencies within a selected range of frequencies, the base station comprising:
a first plurality of mixers for mixing data signals with pseudo random chip code sequences to generate a plurality of spread spectrum CDMA data signals; a second plurality of mixers for mixing the spread data signals with an intermediate frequency (IF) signal as a plurality of IF spread data signals; a plurality of adaptive notch filters for notch filtering the IF data signals; a third plurality of mixers for mixing the filtered IF data signals with a radio frequency (RF) signal as spread RF data signals; wherein the spread RF data signals are effectively notch filtered at frequencies within the selected ranges; and an antenna for transmitting to personal communication network units the spread RF data signals.
- 39. The base station of claim 38 further comprising a combiner for combining the spread RF data signals prior to transmission.
- 40. A spread spectrum base station comprising:
means for generating a plurality of spread spectrum signals, the spread spectrum signals encompassing a selected frequency spectrum; means for detecting frequencies within the selected frequency spectrum by a diverse signal associated with the detected frequencies; means for notch filtering the spread spectrum signals so that a transmitted version of the spread spectrum signals is notch filtered at the detected frequencies; and means for transmitting the notch filtered spread spectrum signals.
- 41. The base station of claim 40 wherein the notch filtering is performed at intermediate frequency.
- 42. The base station of claim 40 wherein the notch filtering is performed at radio frequency.
- 43. A spread spectrum base station comprising:
a plurality of mixers for mixing data signals with codes to generate a plurality of spread spectrum signals; a sensor for detecting frequencies within a selected frequency spectrum by a diverse signal associated with the detected frequencies; a plurality of notched filters for notch filtering the spread spectrum signals so that a transmitted version of the spread spectrum signals is notch filtered at the detected frequencies; and an antenna for transmitting the notch filtered spread spectrum signals.
- 44. The base station of claim 43 wherein the notch filtering is performed at intermediate frequency.
- 45. The base station of claim 43 wherein the notch filtering is performed at radio frequency.
CROSS REFERENCE TO RELATED APPLICATION(S)
[0001] This application is a continuation of U.S. patent application Ser. No. 10/087,643, filed Feb. 28, 2002, which is a continuation of U.S. patent application Ser. No. 09/846,068, filed May 1, 2001, now U.S. Pat. No. 6,407,989, which is a continuation of U.S. patent application Ser. No. 09/602,718, filed Jun. 26, 2000, now U.S. Pat. No. 6,243,370, which is a continuation of U.S. patent application Ser. No. 08/272,498, filed Jan. 21, 1994, now U.S. Pat. No. 6,115,368, which is a file wrapper continuation of U.S. patent application Ser. No. 08/015,574, filed Feb. 5, 1993, which is a continuation of U.S. patent application Ser. No. 07/700,788, filed May 15, 1991, now U.S. Pat. No. 5,185,762, which is/are incorporated by reference as if fully set forth.
Continuations (6)
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Number |
Date |
Country |
Parent |
10087643 |
Feb 2002 |
US |
Child |
10782165 |
Feb 2004 |
US |
Parent |
09846068 |
May 2001 |
US |
Child |
10087643 |
Feb 2002 |
US |
Parent |
09602718 |
Jun 2000 |
US |
Child |
09846068 |
May 2001 |
US |
Parent |
08272498 |
Jan 1994 |
US |
Child |
09602718 |
Jun 2000 |
US |
Parent |
08015574 |
Feb 1993 |
US |
Child |
08272498 |
Jan 1994 |
US |
Parent |
07700788 |
May 1991 |
US |
Child |
08015574 |
Feb 1993 |
US |