LimeADPD
Introduction
LimeDSP Algorithms
LimeADPD
Indirect Learning Architecture
Complex Valued Memory Polynomial
LimeADPD Equations
Training Algorithm
LimeADPD I/Q - DPD with I/Q Imbalance Mitigation
Transmitter I/Q imbalance
LimeADPD I/Q Indirect Learning Architecture
Complex Valued Memory Polynomial
LimeADPD I/Q Equations
LimeADPD I/Q Training Algorithm
Crest Factor Reduction (CFR)
Motivation for Peak to Average Power Ratio Reduction
Peak Windowing Method
Lime Equaliser - The I/Q Imbalance Correction and Gain Flattening
Mathematical Background of the Equaliser Design Procedure
The Amplitude Response, Phase Response and Group Delay of FIR Filter
Implementation Platform
LimeSDR-PCIe-5G
LMS1 transmit path
LMS2 transmit path
Equaliser implementation
LimeSDR-QPCIe
Board Programming
LimeSDR-PCIe-5G
Hardware configuration
FPGA gateware bitstream generation
Uploading FPGA gateware bitstream to the FLASH memory
LimeSDR-QPCIe
Uploading FX3 Firmware to SPI FLASH Memory
PCIe IP core generation
FPGA gateware bitstream generation
Uploading FPGA gateware bitstream to FLASH memory
LimeSuiteGUI
LimeSDR-PCIe-5G
Board related controls window
LMS2/LMS3 clock configuration
LMS1 CFR, LMS3 RxTSP controls window
LMS2 CFR controls window
LimeSDR-QPCIe
Board Related Controls window
Board Configuration Guide
LimeSDR-PCIe-5G
Connecting to the board
LMS1 DPD Hardware Configuration
LMS1 DPD Software Configuration
LMS2 Equaliser Hardware Configuration
LMS2 Equaliser Software Configuration
LimeSDR-QPCIe
Hardware Configuration
LimeSuiteGUI settings
LimeDSP User Guides
CFR Configuration
DPDViewer Window
DPDControl Application
Equaliser Application
Measured Results
DPD Results
LimeSDR-PCIe-5G
Hardware Setup
Test Case 1: LTE 5MHz Low IF, Maxim Integrated MAX2612 PA
Test Case 2: Ten-tone Low IF, Maxim Integrated MAX2612 PA
Test Case 3: 10MHz LTE, 1W modulated output power amplifier
LimeSDR-QPCIe
Hardware Setup
Test Case 1: 10MHz LTE, Maxim Integrated MAX2612 PA
Test Case 2: 20MHz LTE, Maxim Integrated MAX2612 PA
Test Case 3: 10MHz LTE, 10W modulated output power amplifier
CFR Results
Hardware Setup
Test Case 1: LTE 5MHz
Test Case 2: LTE 10 MHz
Test Case 3: LTE 15 MHz
Test Case 4: LTE 20 MHz
Equaliser Results
Hardware Setup
Results
Conclusion
LimeADPD
LimeADPD I/Q
Equaliser
LimeADPD
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LimeDSP Algorithms
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LimeDSP Algorithms
The mathematical background of LimeDSP algorithms is presented in this Section.