Improved Detection Scheme Based on Lattice-Reduction and Threshold Algorithm in MIMO-OFDM Systems

2015 ◽  
Vol E98.A (6) ◽  
pp. 1343-1345 ◽  
Author(s):  
Jae-Jeong KIM ◽  
Hyoung-Kyu SONG
Keyword(s):  
Lattice Reduction ◽  
Ofdm Systems ◽  
Detection Scheme ◽  
Threshold Algorithm ◽  
Mimo Ofdm

scholarly journals Low Power Consumption Signal Detector Based on Adaptive DFSD in MIMO-OFDM Systems

Energies ◽  
2019 ◽  
Vol 12 (4) ◽  
pp. 599
Author(s):  
Seong-Joon Shim ◽  
Seung-Jin Choi ◽  
Hyoung-Kyu Song
Keyword(s):  
Power Consumption ◽  
Orthogonal Frequency Division Multiplexing ◽  
Signal To Noise Ratio ◽  
Low Complexity ◽  
Ofdm Systems ◽  
Error Performance ◽  
Detection Scheme ◽  
Signal Detector ◽  
Multiple Input ◽  
Mimo Ofdm

For a low complexity signal detector to reduce the power consumption for multiple input and multiple output orthogonal frequency division multiplexing (MIMO-OFDM) systems, the depth-first sphere decoding (DFSD) detection scheme was proposed. However, the DFSD detection scheme still has high complexity in the hardware implementation. The complexity is especially high when the signal-to-noise ratio (SNR) is low. Therefore, this paper proposes an adaptive DFSD detection scheme. The proposed detection scheme arrays nodes, sorting by ascending order of squared Euclidean distance (ED) at the top layer of tree structure. Then, the proposed detection scheme uses the different number of nodes according to thresholds based on channel condition. In the simulation results, the proposed detection scheme has similar error performance and low complexity compared with the conventional DFSD detection scheme. Therefore, the proposed detection scheme reduces the power consumption in the signal detector.

An adaptive QR-based energy efficient signal detection scheme in MIMO-OFDM systems

2020 ◽  
Vol 149 ◽  
pp. 225-231 ◽  
Author(s):  
Jae-Hyun Ro ◽  
Seung-Jun Yu ◽  
Young-Hwan You ◽  
Sung Kyung Hong ◽  
Hyoung-Kyu Song
Keyword(s):  
Signal Detection ◽  
Energy Efficient ◽  
Ofdm Systems ◽  
Detection Scheme ◽  
Mimo Ofdm
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