Modified spatial diversity schemes for coverage enhancement

A space diversity and scheme technology, applied in space transmit diversity, diversity/multi-antenna systems, multiplex communication, etc., can solve performance degradation and other problems

Active Publication Date: 2015-02-11
QUALCOMM INC
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

This interference can degrade performance on the downlink and uplink

Method used

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  • Modified spatial diversity schemes for coverage enhancement
  • Modified spatial diversity schemes for coverage enhancement
  • Modified spatial diversity schemes for coverage enhancement

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[0027] The detailed description, given below in conjunction with the accompanying drawings, is intended as a description of various configurations and is not intended to represent the only configurations that implement the concepts described herein. The detailed description includes specific details in order to provide a thorough understanding of various concepts. However, one skilled in the art will recognize that the concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form in order to avoid obscuring the concepts.

[0028] The techniques described herein can be used in various wireless communication networks, such as Code Division Multiple Access (CDMA) networks, Time Division Multiple Access (TDMA) networks, Frequency Division Multiple Access (FDMA) networks, Orthogonal FDMA (OFDMA) networks, single-carrier FDMA (SD-FDMA) network and so on. The terms "network" and "system" are often u...

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Abstract

In one aspect, a method to enhance coverage in a heterogeneous wireless network wireless communication is disclosed. The method includes generating a reference signal indicating a plurality of transmit antenna ports and generating modulation symbols. Modulation symbols are assigned to each of the plurality of transmit antenna ports, in accordance with a spatial diversity coding scheme for the plurality of transmit antenna ports. At least one of the modulation symbols assigned to at least one of the plurality of transmit antenna ports is muted prior to transmission in accordance with the spatial diversity coding scheme. The non-muted modulation symbols and the reference signal are transmitted on the other of the plurality of transmit antenna ports.

Description

[0001] This application is a divisional application of the application with the application number 201180020833.9 and the title of the invention "A Modified Space Diversity Scheme for Coverage Enhancement" filed on October 25, 2012. [0002] Cross References to Related Applications [0003] This application claims the benefit of U.S. Provisional Patent Application No. 61 / 328,535, filed April 27, 2010, entitled MODIFIED SPATIAL DIVERSITY SCHEMES FOR COVERAGE ENHANCEMENT, the entire disclosure of which is hereby expressly incorporated by reference into this application . technical field [0004] In general, various aspects of the present disclosure relate to wireless communication systems, and in particular, to modified space diversity schemes for coverage enhancement. Background technique [0005] Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and so on. These wireless ne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04J11/00
CPCH04J11/0053H04J11/0033H04B7/0473H04B7/04H04J11/003H04J11/005
Inventor 罗涛K·巴塔德张晓霞T·余K·刘
Owner QUALCOMM INC
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