Wireless network receiver

• US 9,584,172 B2
• Filed: 08/07/2015
• Issued: 02/28/2017
• 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
• Primary Examiner(s): Garcia, Santiago
• Application Number:
  US14/821,264
• Publication Number:
  US 20150349823A1
• Time in Patent Office: 571 Days
• Field of Search: 375/345
• 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;

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

an automatic amplifier gain control module that measures the power of the received signal and sends power information to the preamble detection module;

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; and

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.