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Efficient physical layer preamble format

A preamble and format technology, applied in the field of effective physical layer preamble format, can solve the problems of poor frame timing accuracy, low sensitivity, and limiting overall performance

Active Publication Date: 2011-04-13
NXP USA INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, non-coherent methods are associated with low sensitivity, i.e. frame timing accuracy may be poor at low signal-to-noise ratio (SNR) levels
Because frame timing is critical to receiving the entire packet, the low sensitivity of frame timing detection will significantly limit overall performance

Method used

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  • Efficient physical layer preamble format
  • Efficient physical layer preamble format
  • Efficient physical layer preamble format

Examples

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Embodiment Construction

[0068] figure 1 is a block diagram of an example wireless communication system 10 in which devices such as transmitting device 12 and receiving device 14 can transmit and receive data packets over a shared wireless communication channel 16 . In one embodiment, devices 12 and 14 may communicate according to a communication protocol using an efficient PHY preamble format detailed below. Each of devices 12 and 14 may be, for example, a mobile station or a non-mobile station equipped with a set of one or more antennas 20-24 and 30-34, respectively. although figure 1 The wireless communication system 10 shown in FIG. 1 includes two devices 12, 14 each having three antennas, but the wireless communication system 10 may of course include any number of devices each equipped with the same or a different number of antennas (e.g. , 1, 2, 3, 4 antennas, etc.).

[0069] Also, it will be noted that although figure 1 The wireless communication system 10 shown in includes a transmittin...

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Abstract

A method for generating a preamble of a data unit for transmission via a communication channel includes generating a first field of the preamble using one of a first sequence or a second sequence, such that the first sequence and the second sequence are complementary sequences such that a sum of out-of-phase aperiodic autocorrelation coefficients of the first sequence and the second sequence is zero; generating, using the other one of the first sequence or the second sequence, an indicator of a start of a second field of the preamble, the second field associated with channel estimation information, such that the indicator of the start of the second field immediately follows the first field; and generating the second field of the preamble.

Description

[0001] Related Application Cross Reference [0002] This application claims the benefit of U.S. Provisional Patent Application Nos. 61 / 053,526, filed May 15, 2008, and 61 / 078,925, filed July 8, 2008, both entitled "PHY Preamble Format for 60 GHz Wideband Wireless Communication Systems", the disclosure of each is hereby expressly incorporated by reference; U.S. Provisional Patent Application Nos. 61 / 080,514 filed July 14, 2008, 61 / 084,133 filed July 28, 2008, July 2008 61 / 084,776 filed on August 30, 61 / 085,763 filed on August 1, 2008, 61 / 090,058 filed on August 19, 2008, 61 / 091,885 filed on August 26, 2008, September 18, 2008 61 / 098,128 filed September 22, 2008, and 61 / 100,112 filed September 25, 2008, each titled "Shortened PHYPreamble Format for 60 GHz Wideband Wireless Communication Systems," at This is also expressly incorporated by reference for the disclosure of each; and U.S. Provisional Patent Application Nos. 61 / 099,790, filed September 24, 2008, and 61 / 102,152, filed ...

Claims

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Application Information

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IPC IPC(8): H04J11/00H04L27/26
CPCH04J13/0014H04J13/10H04L27/2613H04L27/26132H04B1/707
Inventor 张鸿远R·U·纳巴吴松平H-L·楼周全
Owner NXP USA INC
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