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Method for transmitting block of symbols in mimo networks

一种发送符号、符号块的技术，应用在使用返回通道进行错误预防/检测、电气元件、防止差错等方向，能够解决自干扰、自干扰增加等问题

Active Publication Date: 2010-12-29
MITSUBISHI ELECTRIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Another problem in MIMO networks is self-interference due to the use of multiple antennas for transmission and reception
As the number of antennas increases, self-interference increases

Method used

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  • Method for transmitting block of symbols in mimo networks
  • Method for transmitting block of symbols in mimo networks
  • Method for transmitting block of symbols in mimo networks

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0015] MIMO-OFDM with spatial multiplexing

[0016] Transmitter

[0017] figure 1 A multiple input multiple output (MIMO-OFDM) transmitter 310 with two transmit antennas 106 is shown. The transmitter includes a modulated data symbol (S 1 , S 2 )111 is encoded as the source 101 of the first block. The encoding uses a first code such as a forward error correction code (FEC), such as a turbo code, a convolutional code, a low density parity check (LDPC) code, and the like. The transmitter also includes a demultiplexer (DeMUX) 102 and two OFDM chains 103. Each OFDM chain includes S 1 And S 2 An OFDM modulator that performs an Inverse Fast Fourier Transform (IFFT) 104, followed by filtering, amplifying, and converting the time domain signal to the passband carrier frequency at the RF block 105.

[0018] The transmitter also includes an encoder 350. The encoder is used during HARQ operation to re-encode the retransmitted symbols into a second block that uses an additional code that was ...

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PUM

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Abstract

A method transmits a block of symbols in a multiple-input multiple-output (MIMO) network including a transmitter having a set of transmit antennas and a receiver having a set of receive antennas. A block of symbols is coded with a first code to generate a first block, which is transmitted and received. If a decoding of the first block is incorrect, then block of symbols is coded with the first code and then a second code different than the first code to generate a second block. The second block is transmitted, received and combined with the first block to recover the block of symbols.

Description

Technical field [0001] The present invention generally relates to the field of wireless communication, and more specifically relates to the use of hybrid automatic repeat request (HARQ) to retransmit data in a multiple input multiple output (MIMO) network. Background technique [0002] MIMO network [0003] In mobile cellular communication networks, the use of multiple input multiple output (MIMO) transmission technology is becoming more and more common. The Worldwide Interoperability for Microwave Access (WiMAX) Forum and the 3rd Generation Partnership Project (3GPP) have released standard specifications that use MIMO to improve transmission capabilities and reliability. [0004] MIMO networks increase capacity by using a technique commonly referred to as spatial multiplexing (SM) to simultaneously use multiple antennas to transmit and receive symbols. MIMO receivers can use advanced signal processing and channel characteristics to detect and decode symbols. To improve reliabilit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04L1/06
CPCH04L1/0662H04L1/1816H04L1/0606
Inventor 菲利普·V·奥尔利克松本涉安德里亚·F·莫利萨奇陶志峰张锦云
Owner MITSUBISHI ELECTRIC CORP
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