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Physical layer frame format design for wideband wireless communications systems

A channel estimation and signal technology, applied in baseband system components, transmission systems, multi-frequency code systems, etc., can solve problems such as limiting the transmission range of high data rates

Active Publication Date: 2011-06-08
MARVELL ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, single-carrier systems often require complex equalizers for high delay spread, effectively limiting the range of high data rate transmissions

Method used

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  • Physical layer frame format design for wideband wireless communications systems
  • Physical layer frame format design for wideband wireless communications systems
  • Physical layer frame format design for wideband wireless communications systems

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Embodiment Construction

[0048] Based on this application, there can be at least three types of broadband devices in a wireless network: 1) SC-only devices, such as simple handheld, short-range, low-power devices; 2) MC-only devices, which target longer distances and higher data rates, which are not as power sensitive and complex as SC-only devices; 3) dual-mode devices, which utilize both single-carrier modulation and multi-carrier tuning, which can control or talk to both single-carrier and multi-carrier devices . Coexistence of these various types of devices may be problematic, especially if the devices cannot communicate with each other, eg, SC-only devices may not be able to communicate with MC-only devices.

[0049] To alleviate these communication problems, a common preamble / header frame format can be used for the physical layer that can be utilized by all three types of devices. Using this common format, any device can understand the preamble / header of any packet. This supports well-controll...

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PUM

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Abstract

Systems and methods are provided for processing a payload portion of a received signal in a single carrier mode or a multiple carrier mode based on a portion of the received signal. A single carrier signaling portion is received at a first rate, and whether the payload portion of the signal is a single carrier signal or a multiple carrier signal is detected from the received single carrier signaling portion. The payload portion of the received signal is received at the first rate and demodulated in a single carrier mode if the detecting determines that the payload portion of the received signal is a single carrier signal, and the payload portion of the received signal is demodulated in a multiple carrier mode if the detecting determines that the payload portion of the received signal is a multiple carrier signal.

Description

[0001] Cross References to Related Applications [0002] This application is a continuation-in-part of US Application No. 12 / 410,883, filed March 25, 2009, which is hereby incorporated by reference in its entirety. This application also claims priority to US Provisional Application No. 61 / 078,952, filed July 8, 2008, which is hereby incorporated by reference in its entirety. U.S. Provisional Application No. 61 / 043,384, filed April 8, 2008, U.S. Provisional Application No. 61 / 044,816, filed April 14, 2008, and U.S. Provisional Application No. 61 / 076,453, filed June 27, 2008 is also relevant and hereby incorporated by reference. technical field [0003] The technology described in this patent document relates generally to broadband wireless communications, and specifically to physical layer frame formats. Background technique [0004] Continuous advances in computer technology have increased the interest in and demand for high data rate (eg, >1 Gbps) wireless communicatio...

Claims

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Application Information

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IPC IPC(8): H04L5/02H04L25/02H04L27/26H04L27/36H04L27/38
CPCH04L27/2601H04L25/02H04L27/36H04L27/38H04L5/02
Inventor 张鸿远R·U·纳巴尔A·D·M·帕拉尼维鲁H-L·娄吴松平
Owner MARVELL ASIA PTE LTD
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