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Linear precoding for time division duplex system

A codebook, part of the technology, applied in the field of linear precoding, can solve the problem of not providing

Active Publication Date: 2009-01-07
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional techniques may provide limited or no feedback related to channel information

Method used

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  • Linear precoding for time division duplex system
  • Linear precoding for time division duplex system
  • Linear precoding for time division duplex system

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Embodiment Construction

[0033] Various embodiments are now described with reference to the drawings, wherein like reference numerals are used to refer to like elements throughout. In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that the described embodiments may be practiced without these specific details. In other instances, well-known structures and devices are shown in block diagram form in order to facilitate illustrating one or more embodiments.

[0034] As used in this application, the terms "component," "module," "system" and similar terms are intended to refer to a computer-related entity, which may be hardware, firmware, a combination of hardware and software, software, or software in execution. . By way of example, a component can be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a th...

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Abstract

Systems and methodologies are described that facilitate generating and / or utilizing explicit and implicit feedback related to a forward link channel for linear precoding in a time division duplex (TDD) multiple-input multiple-output (MIMO) system. Implicit feedback may be provided by estimating a reverse link channel, which may be substantially similar to at least a portion of the forward link channel (e.g., based upon reciprocity). Moreover, explicit feedback may be yielded by quantizing at least part of an estimate of the forward link channel (e.g., utilizing vector and / or scalar quantization).

Description

[0001] Related Application Cross Reference [0002] This application claims to be the 60 / 731,027 filed on October 27, 2005 and titled "A METHOD AND APPARATUS FOR LINEAR PRECODINGFOR TIME DIVISION DUPLEX SYSTEM" Interest in U.S. Provisional Patent Application No. The entire content of the above application is incorporated herein by reference. technical field [0003] The following description relates generally to wireless communication, and more specifically to linear precoding in a time division duplex (TDD) wireless communication system. Background technique [0004] Wireless communication systems are widely deployed to provide various types of communication content such as voice, data, etc., for example. A typical wireless communication system may be a multiple-access system capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth, transmission power, . . . ). Examples of such multiple access systems may include Code ...

Claims

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Application Information

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IPC IPC(8): H04B7/06
CPCH04B7/0842H04B7/0862H04B7/0663H04B7/061H04B7/0417H04B7/0421H04B7/0691H04B7/0639
Inventor 王际兵塔梅尔·卡杜斯格温德琳·D·巴里亚克
Owner QUALCOMM INC
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