Dynamic receiver filter adjustment across preamble and information payload

Abstract

A method and apparatus is disclosed to dynamically select among two or more receiver filter bandwidths to more closely approximate a bandwidth of a corresponding signal field included in a received communications signal. A communications transmitter may transmit a transmitted communication signal in at least one formatted blocks of data or packets. Each one of the at least one formatted blocks of data or packets include at least one single stream signal field such as, but not limited to, a single stream preamble, a single stream signal field, and / or a single stream single stream information payload in accordance with the known single stream communications standard and / or at least one multiple stream signal field such as, but not limited to, a multiple stream preamble, a multiple stream signal field, and / or a multiple stream multiple stream information payload in accordance with the known multiple stream communications standard. The communications receiver may include one or more receiver filters to select among one or more receiver filter bandwidths to filter the at least one single stream signal field and / or the at least one multiple stream signal field.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]The present application claims the benefit of: U.S. Provisional Patent Appl. No. 60 / 929,154, filed Jun. 15, 2007, entitled “Carrier Selection for Multiple Antennas”; U.S. Provisional Patent Appl. No. 60 / 929,155, filed Jun. 15, 2007, entitled “Dynamic Receiver Filter Adjustment Across Preamble and Information Payload”; U.S. Provisional Patent Appl. No. 60 / 929,156, filed Jun. 15, 2007, entitled “Adjacent Channel Interference (ACI) Detection”; U.S. Provisional Patent Appl. No. 60 / 960,706, filed Oct. 10, 2007, entitled “Gain Control for Reduced Interframe Spacing (RIFS),” each of which is incorporated by reference herein in its entirety.[0002]The present application is related to: U.S. Provisional Patent Appl. No. 60 / 929,149, filed Jun. 15, 2007, entitled “Spur Avoidance Via Static Changes to PHY Clock Frequency”; U.S. Provisional Patent Appl. No. 60 / 960,384, filed Sep. 27, 2007, entitled “Guard Interval Cyclic Filtering for Short Guard Inter...

AI Technical Summary

Problems solved by technology

As a result, using the conventional receiver filter to filter these one or more signal fields results in a degradation of a signal to noise ratio (SNR).

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