Claims
- 1. A communication device, comprising:
- a pilot signal despreader;
- a traffic channel combiner;
- a power control bit decoder;
- a time shared lock indicator circuit coupled to the traffic channel combiner and the power control bit decoder, the time shared lock indicator circuit detecting pilot symbols and providing a primary lock indication for use by the traffic channel combiner and detecting pilot symbols and providing a secondary lock indication for use by the power control bit decoder; and
- a controller for controlling the time shared lock indicator circuit.
- 2. A communication device as recited in claim 1 wherein the time shared lock indicator circuit provides the primary lock indication at a first rate and provides the secondary lock indication at a second rate, the second rate being faster than the first rate.
- 3. A communication device as recited in claim 1 further comprising a plurality of receiver fingers for detecting traffic symbols and power control symbols, each of the plurality of receiver fingers including an associated time shared lock indicator circuit, the traffic channel combiner being coupled to the plurality of receiver fingers for combining traffic symbols from respective receiver fingers in response to a respective primary lock indication received from each respective receiver finger, the power control bit decoder being coupled to the plurality of receiver fingers for decoding power control bits from respective receiver fingers in response to a respective secondary lock indication received from each respective receiver finger.
- 4. A communication device as recited in claim 3 wherein the time shared lock indicator circuit provides the primary lock indication when a long-term average measurement of pilot signal energy exceeds a first predetermined threshold and the time shared lock indicator circuit provides the secondary lock indication when a short-term average measurement of pilot signal energy exceeds a second predetermined threshold.
- 5. A communication device comprising:
- a plurality of receiver fingers configured for receiving a spread spectrum communication signal including a pilot channel signal, each receiver finger including:
- a pilot symbol despreader for despreading the pilot channel signal and detecting pilot symbols;
- a received signal strength indication circuit coupled to the pilot symbol despreader, the received signal strength indication circuit having a variable bandwidth including a first bandwidth and a second bandwidth, the first bandwidth being less than the second bandwidth, the received signal strength indication circuit producing a primary lock indication when a received signal quality exceeds a first predetermined threshold at the first bandwidth and producing a secondary lock indication when the received signal quality exceeds a second predetermined threshold at the second bandwidth; and
- a controller coupled to the plurality of receiver fingers for controlling lock status of the plurality of receiver fingers in response to the primary lock indication and the secondary lock indication.
- 6. A communication device as recited in claim 5 further comprising a combiner coupled to the plurality of receiver fingers, the combiner combining a traffic signal from each respective assigned receiver finger in response to the primary lock indication from each respective assigned receiver finger.
CROSS-REFERENCE TO RELATED APPLICATIONS
This is a continuation in part of application Ser. No. 08/646,710, now U.S. Pat. No. 5,754,583 filed May 6, 1996, and entitled "Communication Device And Method For Determining Finger Lock Status In A Radio Receiver."
US Referenced Citations (2)
Number |
Name |
Date |
Kind |
5216692 |
Ling |
Jun 1993 |
|
5490165 |
Blakeney, II et al. |
Feb 1996 |
|
Foreign Referenced Citations (1)
Number |
Date |
Country |
44 25 354 A1 |
Feb 1995 |
DEX |
Continuation in Parts (1)
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Number |
Date |
Country |
Parent |
646710 |
May 1996 |
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