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Method and system for adaptive modulations and signal field for closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system

a wireless local area network and signal field technology, applied in the field of wireless communication, can solve the problems of not being able to adequately address these shortcomings and/or satisfy the demand for these new features and capabilities in wlans

Active Publication Date: 2010-09-30
BROADCOM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

"The patent describes a system and method for a closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) that uses adaptive modulations and signal field to improve performance. The technical effects of this invention include improved data transmission speed and reliability, as well as reduced interference and improved signal quality."

Problems solved by technology

Notwithstanding, there are no existing methodologies that adequately address these shortcomings and / or satisfy the demand for these new features and capabilities in WLANs.

Method used

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  • Method and system for adaptive modulations and signal field for closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system
  • Method and system for adaptive modulations and signal field for closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system
  • Method and system for adaptive modulations and signal field for closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system

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Embodiment Construction

[0020] Certain embodiments of the invention relate to a method and system for an optional closed loop mechanism with adaptive modulations for a multiple input multiple output (MIMO) wireless local area network (WLAN) system. In accordance with an embodiment of the invention, a channel sounding mechanism may be utilized to communicate information between a transmitter and a receiver. Various embodiments of the invention may utilize properties of Eigenvalue analysis of MIMO systems to reduce the number of bits of binary information required to encode a modulation type among a plurality of modulation types to a spatial stream among a plurality of spatial streams. The reduction in the number of required bits in various embodiments of the invention compared to other conventional approaches may enable greater flexibility in systems that utilize closed loop feedback mechanisms. Various embodiments of the invention may utilize a new channel sounding mechanism in a closed loop system that en...

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Abstract

Aspects of a method and system for an optional closed loop mechanism with adaptive modulations for a multiple input multiple output (MIMO) WLAN system are provided. One aspect of the system may utilize properties of Eigenvalue analysis of MIMO systems to reduce the number of bits of binary information required to select a modulation type among a plurality of modulation types for each spatial stream among a plurality of spatial streams. This provides a reduction in the required number of bits when compared to other approaches and accordingly, enable greater flexibility in systems that utilize closed loop feedback mechanisms.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS / INCORPORATION BY REFERENCE [0001] This application makes reference, claims priority to, and claims the benefit of U.S. Provisional Application Ser. No. 60 / 656,357 filed Feb. 25, 2005. [0002] This application makes reference to: U.S. patent application Ser. No. 11 / 061,567 filed Feb. 18, 2005; U.S. patent application Ser. No. 11 / 052,389 filed Feb. 7, 2005; and U.S. patent application Ser. No. 11 / 052,353 filed Feb. 7, 2005. U.S. patent application Ser. No. ______ (Attorney Docket No. 16425US02) filed Apr. 20, 2005. [0003] All of the above stated applications are hereby incorporated herein by reference in their entirety.FIELD OF THE INVENTION [0004] Certain embodiments of the invention relate to wireless communication. More specifically, certain embodiments of the invention relate to a method and system for an adaptive modulations and signal field for a closed loop multiple input multiple output (MIMO) wireless local area network (WLAN) system...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04Q7/24H04B7/024H04B7/0413
CPCH04L1/0003H04L1/0026H04L1/0025H04L1/0618H04L1/0693H04L5/0023H04L5/0042H04L5/0046H04L5/006H04L5/0094H04L25/0224H04L27/0008H04L27/0012H04L27/2613H04B7/02H04L1/0009H04B7/024H04B7/0413
Inventor KIM, JOONSUK
Owner BROADCOM CORP
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