Apparatus and method for transferring multipath signal by non-equilibrium power in MIMO system

A multi-channel signal and output signal technology, which is applied in the direction of transmission control/equalization, diversity/multi-antenna system, space transmit diversity, etc., can solve the problems of DSTTD communication system performance degradation, inability to meet 2 antennas, complicated decoding methods, etc. The decoding method and device are simplified, the complexity is reduced, and the decoding is simple.

Active Publication Date: 2015-03-25
ALCATEL LUCENT SHANGHAI BELL CO LTD
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Problems solved by technology

[0005] However, on the spatial correlation channel, the DSTTD communication system will produce serious performance degradation; in addition, at the receiving end of the DSTTD communication system, only conventional MIMO system decoding methods, such as maximum similarity (ML) and other methods, can be used to decode the received signal. Decoding, usually this decoding method is more complicated; finally, this method can only use 4 antennas, but it cannot meet the commonly used 2 antennas

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  • Apparatus and method for transferring multipath signal by non-equilibrium power in MIMO system
  • Apparatus and method for transferring multipath signal by non-equilibrium power in MIMO system
  • Apparatus and method for transferring multipath signal by non-equilibrium power in MIMO system

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Embodiment Construction

[0046] The present invention will be described in detail below with reference to the drawings and in conjunction with specific embodiments.

[0047] figure 1 In accordance with a specific embodiment of the present invention, a block diagram of an encoding processing device in a transmitter for encoding a signal to be transmitted.

[0048] Such as figure 1 As shown, two input signals (named as the first input signal and the second input signal) are respectively sent to the first power amplifying device 11 and the second power amplifying device 13, wherein each input signal may include For signals for testing channel characteristics, such as reference signals such as preamble or pilot signals, each input signal can also include a test signal specifically used to test the bit error rate of signal transmission.

[0049] The first power amplifying device 11 amplifies the power of the first input signal, and can determine its power gain according to a power gain control signal. When the tr...

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Abstract

The invention provides a method and a device for obtaining diversity gain and spatial multiplexing gain simultaneously by a simple mode of the system in MIMO communication system and complex degree of signal detection of a receiving end is low. The invention takes non-equilibrium power to transmit signals in layers, namely each layer of signals is respectively amplified power in different gains before spatial time coding, then signals which are coded are transmitted through a plurality of antennas. Simultaneously, the invention also provides a method for detecting optimum transmitting power on the basis of feedback information of a receiver.

Description

Technical field [0001] The present invention relates to a multiple-input multiple-output (MIMO) communication system, and in particular to a method and device for transmitting space-time coded signals in a MIMO system. Background technique [0002] At present, MIMO technology is being widely studied and applied due to its advantages in transmission capacity and spectrum efficiency. Many different types of MIMO systems have been developed, such as using space-time block coding (STBC) and vertical layering. Space-time code (VBLAST) and other systems, some of which have been applied in many advanced broadband wireless communication standards, such as 3G Long Term Evolution (LTE) and Global Microwave Interoperability Technology (WIMAX, World Interoperability for Microwave Access). [0003] The existing MIMO schemes have their own advantages and disadvantages. For example, the STBC scheme can obtain complete diversity performance and a simple maximum similarity (ML) detection method, b...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/04H04B7/005
CPCY02D30/70
Inventor 吴克颖朱孝龙杨红卫蔡立羽
Owner ALCATEL LUCENT SHANGHAI BELL CO LTD
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