WIRELESS NETWORK RECEIVER

• US 20150349823A1
• Filed: 08/07/2015
• Published: 12/03/2015
• Est. Priority Date: 11/25/2013
• Status: Active Grant

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Qiu, Wenxun, Schmidl, Timothy Mark, Fu, Minghua, Batra, Anuj
• Granted Patent: US 9,584,172 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H03G 3/3078 Circuits generating control signals for digitally modulated signals
• CPC Class Codes: H03G 3/3089 Control of digital or coded signals
• CPC Class Codes: H03M 3/042 with adaptable step size, e.g. adaptive differential pulse code modulation [ADPCM]
• CPC Class Codes: H04B 1/123 using adaptive balancing or compensation means adaptive filter circuits and algorithms H03H
• CPC Class Codes: H04B 17/20 of receivers
• CPC Class Codes: H04B 7/0811 during preamble or gap period
• CPC Class Codes: H04L 27/14 Demodulator circuits; Receiver circuits

Abstract

A wireless network receiver includes a detection module that uses preamble data in a data frame for signal processing functions and the detection module is configured to adjust the number of preamble data bits that are used based on the power of a received signal.

Claims

1. A wireless network receiver, comprising:

a preamble detection module that uses preamble bits in a data frame for signal processing functions; and

where the preamble detection module adjusts the number of preamble bits that are used in response to the power of a received signal.

2. The wireless network receiver of claim 1, further comprising an automatic amplifier gain control module that measures the power of the received signal and sends power information to the preamble detection module.

3. The wireless network receiver of claim 2, where the power information specifies an amplifier gain setting index in response to the power of the received signal.

4. The wireless network receiver of claim 2, where the power information specifies a number of amplifier gain adjustment steps that will be required in response to the power of the received signal.

5. The wireless network receiver of claim 4, where the preamble detection module uses a first number of preamble bits for signal processing when the required number of gain adjustment steps is less than a predetermined threshold, and where the preamble detection module uses a second number of preamble bits for signal processing when the required number of gain adjustment steps is greater than the predetermined threshold.

6. The wireless network receiver of claim 4, where the preamble detection module records a history of the number of amplifier gain adjustment steps required by previously received signals, and where the preamble detection module adjusts the number of preamble bits that are used based on the recorded history.

7. A method, comprising:

receiving, by a wireless network receiver, a signal;

using, by a preamble detector module in the wireless network receiver, preamble bits in the signal for signal processing; and

adapting, by the preamble detector module, the number of preamble bits being used, in response to the power of the signal.

8. The method of claim 7, further comprising:

performing, by the preamble detector module, a plurality of signal processing functions using the preamble bits; and

adapting, by the preamble detector module, the number of preamble bits used by each signal processing function, in response to the power of the signal.

9. The method of claim 7, further comprising:

sending, by an amplifier module, an amplifier gain setting index to the preamble detector module.

10. The method of claim 7, further comprising:

determining, by an amplifier module, the number of amplifier gain adjustment steps needed, based on the power of the signal.

11. The method of claim 10, further comprising:

sending, by the amplifier module, information indicating the number of amplifier gain adjustment steps needed to the preamble detector module.

12. A method, comprising:

recording, by a wireless network receiver, a history of the power of received signals;

receiving, by the wireless network receiver, a signal;

using, by a preamble detector module in the network receiver, preamble bits in the signal for signal processing; and

adapting, by the preamble detector module, the number of preamble bits being used, based on the history of the power of received signals.