Invention Grant
US07702029B2 MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
有权
MIMO预编码使得能够进行空间复用，功率分配和自适应调制和编码
- Patent Title: MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding
- Patent Title (中): MIMO预编码使得能够进行空间复用，功率分配和自适应调制和编码
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Application No.: US11537902Application Date: 2006-10-02
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Publication No.: US07702029B2Publication Date: 2010-04-20
- Inventor: Jayesh H. Kotecha , Kaibin Huang
- Applicant: Jayesh H. Kotecha , Kaibin Huang
- Applicant Address: US TX Austin
- Assignee: Freescale Semiconductor, Inc.
- Current Assignee: Freescale Semiconductor, Inc.
- Current Assignee Address: US TX Austin
- Agency: Hamiton & Terrile, LLP
- Agent Michael Rocco Cannatti
- Main IPC: H04B7/02
- IPC: H04B7/02
Abstract:
In a closed-loop wireless communication system, a codebook-based feedback mechanism is provided to enable non-unitary precoding for multi-stream transmission, where in each stream is optimized with suitable transmission power allocation and AMC. The codebook-based feedback mechanism uses a precoding codebook having a power allocation matrix which is constrained to specify that beamforming always applies full power to a predetermined beam. With this constraint, a one-bit power allocation feedback index may be used to switch between beamforming and spatial multiplexing.
Public/Granted literature
- US20080080634A1 MIMO precoding enabling spatial multiplexing, power allocation and adaptive modulation and coding Public/Granted day:2008-04-03
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