Maximum likelihood detector and maximum likelihood detection method

A possibility, detector technology, applied in the direction of preventing/detecting errors through diversity reception, space transmit diversity, transmission systems, etc., can solve problems such as long computational time delay complexity computational power

Active Publication Date: 2017-11-17
REALTEK SEMICON CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, exhaustive search is not an efficient search method, because it takes a long time to calculate processing latency (Processing Latency), complexity (Complexity) and computing power (Computation Power) because it calculates all possible solutions

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  • Maximum likelihood detector and maximum likelihood detection method
  • Maximum likelihood detector and maximum likelihood detection method
  • Maximum likelihood detector and maximum likelihood detection method

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[0023] The terms used in the following explanations refer to the customary terms in the technical field. If some terms are explained or defined in this manual, the explanations of these terms shall be based on the descriptions or definitions in this manual.

[0024] The disclosure content of the present invention includes the maximum possibility detector and detection method, and the wireless signal receiver adopting the maximum possibility detection, which uses bit (Bit) as the unit and outputs the corresponding logarithm in soft decision (Soft Decision) mode The likelihood ratio (Log Likelihood Ratio; LLR) is used as an input value of the decoding circuit for error correction. Individually speaking, some components of these detectors and receivers may be known components. On the premise of not affecting the full disclosure and practicability of the invention, the details of individual known components will be omitted in the following description; in addition, the The method ...

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Abstract

The present invention relates to a maximum likelihood detector and a maximum likelihood detection method. The maximum likelihood detector a comprises a searching value selection circuit; and a maximum likelihood detection circuit. The searching value selection circuit is configured to decide the first layer of searching values. The maximum likelihood detection circuit is configured to execute the following steps: selecting the first layer of candidate signal values according to a receiving signal or a derivative signal thereof, a channel estimation signals or a derivative signal thereof and the first layer of the searching values, and supplementing one or more than one candidate signal values as required; calculating the second layer of the candidate signal values according to the first layer of the candidate signal values, and supplementing one or more than one candidate signal values and corresponding first layer of the candidate signal values as required; and calculating the log-likelihood ratio according to all the first layer of the candidate signal values and the second layer of the candidate signal values.

Description

technical field [0001] The present invention relates to radio signal reception, and more particularly to radio signal reception using maximum likelihood detection. Background technique [0002] In the application of wireless communication, the user's demand for high data transmission rate is increasing day by day. How to effectively improve the bandwidth utilization efficiency within the limited system bandwidth, and then improve the system throughput (Throughput; TP) has always been a challenge for various businesses. research topics. Under the market trend, the spatial multiplexing (Spatial Multiplexing) transmission method under the Multiple-Input Multiple-Output (MIMO) technology can greatly increase the system throughput without increasing the bandwidth, so this transmission method It has attracted considerable attention in recent years. [0003] The spatial multitasking transmission method mainly uses multiple antennas at the transmitting end to transmit mutually ind...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B7/08H04L1/00H04L1/06H04L25/02
CPCH04B7/0413H04B7/08H04L1/0054H04L1/06H04L25/0242
Inventor 张仲尧林专湖杨易洵
Owner REALTEK SEMICON CORP
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