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Method and device for implementing full velocity transmission in MIMO system

An encoding method and technology of encoding methods, which are applied in transmission systems, multi-carrier systems, digital transmission systems, etc., can solve the problems of large transmission delay, high decoding complexity, and complex decoding of LD codes, so as to improve capacity and decode low-complexity effects

Active Publication Date: 2011-07-06
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

[0013] The LD code has a large transmission delay and needs to jointly detect multiple symbols, so the decoding complexity is high. In addition, the performance of the LD code is not ideal
[0014] The decoding delay of the FDFR code is relatively long (usually proportional to the number of transmitting antennas), and the decoding complexity is relatively high. If the maximum likelihood (ML) decoding is used to obtain the best performance, it will be more complicated.
In particular, for a with N T transmit antennas and N R For a MIMO system with multiple receiving antennas, the FDFR code needs to be correct for N T 2 Symbols are jointly decoded, so even for a moderate number of transmit antennas (such as 4) and a medium-order modulation scheme (such as 16QAM), ML decoding is too complicated to be practical.

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  • Method and device for implementing full velocity transmission in MIMO system
  • Method and device for implementing full velocity transmission in MIMO system
  • Method and device for implementing full velocity transmission in MIMO system

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0042] figure 1 It is a schematic diagram of an internal structure of a transmitter for encoding and transmitting a signal to be encoded in a MIMO system according to an embodiment of the present invention.

[0043] Such as figure 1 As shown, the transmitter 1 includes an encoding device 10 and a transmission control device 11 . The encoding device 10 receives m signals to be encoded (m is an integer greater than 1), and uses m encoding methods (such as linear transformation, convolutional encoding, etc.) to encode the m signals to be encoded to obtain m Encode the signal, that is, use the first encoding method to encode the m signals to be encoded to obtain the first encoded signal...similarly, use the mth encoding method to encode the m signals to be encoded Encoding, to obtain the mth encoded signal. Subsequently, the m coded signals are sent to the tr...

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Abstract

The invention relates to a method and device for realizing the coding and decoding of full speed transmission in an MIMO system; wherein, a transmitter respectively adopts m coding modes to carry out coding on m signals to be coded (m refers to an integer more than 1) to obtain m coding signals; the coded signals are respectively transmitted by m transmitting antennas in the same timeslot so as to realize the transmission of full speed. The invention provides a special coding method in particular. The coding method can be adopted to carry out coding on the signals to be coded, thus not only being able to realize the transmission of full speed, but also being able to improve the reliability of data transmission without increasing the coding time delay and the coding complexity.

Description

technical field [0001] The present invention relates to a MIMO communication system, in particular to a method and device for encoding and decoding in the MIMO system. Background technique [0002] Multiple-input multiple-output (MIMO) technology is a major breakthrough in the field of wireless communication, and it is one of the key technologies that must be adopted in the new generation of mobile communication systems. This technology can double the capacity and capacity of the communication system without increasing the bandwidth. Spectrum utilization. [0003] There are two main design goals of the existing MIMO technology: one is to obtain higher anti-fading performance by utilizing space diversity, and the other is to obtain high-rate data transmission by increasing the capacity of the MIMO fading channel. For example, space-time orthogonal codes and space-time trellis codes belong to the performance-oriented class coding for the first goal; Rate-oriented class codin...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/06H04L1/00H04B7/06H04L27/34H04L25/49
Inventor 朱孝龙吴克颖杨红卫
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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