Invention Grant
US08711958B2 Method for decoding a spatially multiplexed data signal using a maximum likelihood detection
有权
使用最大似然检测对空间复用数据信号进行解码的方法
- Patent Title: Method for decoding a spatially multiplexed data signal using a maximum likelihood detection
- Patent Title (中): 使用最大似然检测对空间复用数据信号进行解码的方法
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Application No.: US13598161Application Date: 2012-08-29
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Publication No.: US08711958B2Publication Date: 2014-04-29
- Inventor: Rabih Chrabieh , Yang Liu
- Applicant: Rabih Chrabieh , Yang Liu
- Applicant Address: FR Puteaux
- Assignee: Sequans Communications
- Current Assignee: Sequans Communications
- Current Assignee Address: FR Puteaux
- Agency: Westman, Champlin & Koehler, P.A.
- Agent David D. Brush
- Main IPC: H04L5/12
- IPC: H04L5/12

Abstract:
The disclosure relates to a method for decoding a received signal in a MIMO communication system and in at least one layer, each layer carrying at least one data symbol belonging to a signal constellation. The method includes, for one of the at least one layer, a maximum likelihood detection step. This step includes: selecting one candidate value for the data symbol of the layer, and determining the Euclidian distance between the received signal Y and the data signal transmitted using said candidate value multiplied by said channel matrix H, weighted by the inverse of a noise covariance matrix C such as ∥Y−ΣiHixi∥C−12, expressed as: Σi≠n∥Hi∥C−12|xi|2−2(HiHC−1Y−0.5Σj≠i,nHiHC−1Hjxj)x*i+∥Hn∥C−12|xn|2−2(HnHC−1Y−Σj≠nHnHC−1Hjxj)x*n=Σi≠nαiR(xi)2−2βiRxi+αnR(xn)2−2βnRxn+Σi≠nαiI(ℑxi)2−2βiIℑxi+αnI(ℑxn)2−2βnIℑxn. The terms depending on αk are computed by adding to each of them a predetermined constant depending on the size of the constellation of the layer k, called a constellation dependent constant.
Public/Granted literature
- US20140062733A1 METHOD FOR DECODING A SPATIALLY MULTIPLEXED DATA SIGNAL USING A MAXIMUM LIKELIHOOD DETECTION Public/Granted day:2014-03-06
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