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12b 200k Sample/sec SAR ADC, 5 uW power consumption, clockless operation 55LP
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K-Best (4X4) MIMO Decoder
The K-best decoder is part of the MIMO decoder .The MIMO Decoder accepts two independent input streams, and the channel estimation matrix. The inputs are the estimated channel matrix and the received vector of symbols. Since the transmitted symbols could be pre-coded, some processing may be needed (optional) at the beginning of the detection. The QR decomposition (QR=H ̂) is performed in preparation for the K-Best decoding. The outputs of the QR decomposition
(R)and(Z=Q^H y ̂ ) are fed to the K-Best decoder.
(R)and(Z=Q^H y ̂ ) are fed to the K-Best decoder.
Features
- Fixed Depth K-Best Decoder (K=16)
- Achieves close-to ML BER performance
- Supports two independent streams with different QAM (from BPSK to 256 QAM)
- Supports square and non-square QAM
- Supports OFDM based systems with different Space Time Coding (STC)
- Soft input soft output
- Support K-best K-best 4X4
Deliverables
- Synthesizable Verilog
- System Model (Matlab)
- Verilog Test Benches
- Documentation
Applications
- MIMO systems
- WiFi IEEE 802.11n/ac
- WiMAX 802.16e
- LTE standard
- RFID
- DVB-NGH
Block Diagram of the K-Best (4X4) MIMO Decoder IP Core
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K-Best
- K-Best (2X2) MIMO Decoder
- Two Port Register File compiler - Memory optimized fore high density and high speed - compiler range up to 320 k
- Dual Port SRAM compiler - Memory optimized for high density and low power - Dual Voltage - compiler range up to 64 k
- Dual Port SRAM compiler - Memory optimized for high density and low power - Dual Voltage - compiler range up to 64 k
- Two Port Register File compiler - Memory optimized for high density and low power - Dual Voltage - compiler range up to 64 k
- Dual Port SRAM compiler - Memory optimized for high density and low power - Dual Voltage - compiler range up to 72 k
