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Minjoon Kim - IEEE Xplore Author Profile

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Recently, researches on the battery management system(BMS) have been actively conducted due to the increase in various electric vehicles. The main function of the BMS is to predict the state of charge(SOC) and the state of health(SOH)of the battery cell to ensure the stability of the vehicle and to achieve optimal performance. This paper designs block IP for estimating SOC and SOH for lithium-ion ...Show More
Driver behavior analysis is one of the most important key function in future autonomous driving systems. An important performance indicator here is real-time quality because it is directly related to safety. Therefore, in this paper, definition of 11 key points for real-time driver posture estimation, design of convolutional neural network(CNN) architecture, and its hardware implementation are pre...Show More
In this paper, a design and implementation of fixed-complexity sphere decoder (FSD) combined with interference mitigation algorithm for downlink (DL) multiuser (MU) multiple-input multiple-output (MIMO) system is presented. To overcome performance degradation from inter-user interference in DL MU-MIMO systems, a hardware friendly optimized interference mitigation algorithm is proposed. The propose...Show More
In this paper, the ASIC design result of magnetic induction for wireless communication system is presented. Magnetic induction system is designed for measurement of distance and sensing status of river bed. The system has a low-power design because it has to be buried in the river bed for a long time. We implemented FPGA board to verify this system, and designed ASIC including digital modem block....Show More
In this paper, an adaptive battery state-of-charge (SOC) estimation method for electric vehicle (EV) battery management system (BMS) is presented. In these days, many parts of EV have been developed with electrical systems, and it makes a growth of energy storage system named battery. Therefore, to make many type of batteries safer and more reliable, BMS is employed and implemented together in EV....Show More
In this paper, the implementation result of real-time simulation system for Ii-ion battery protection circuit module (PCM) is presented. Battery protection is one of the most important factors to protect the electrical system. Especially, as the usage of the battery increases, an accurate monitoring of battery state becomes necessary for system safety. Therefore, we implement the PCM consisting of...Show More
In this letter, we propose lattice-reduction (LR)-aided partial marginalization (PM) for soft output multiple-input multiple-output (MIMO) detection. PM has the advantages of a fully predictable runtime and convenience in parallelization while offering a well-defined tradeoff between the performance and the computational complexity. However, the computational complexity of PM to achieve a high lev...Show More
In this paper, we propose a fixed-complexity variant of LLL (Lenstra-Lenstra-Lovasz) algorithm. LLL algorithm is widely used in MIMO signal processing to obtain full diversity gain with low complexity increase. However, because of its non-deterministic nature with varying complexity and high worst-case costs, the real implementation of original LLL algorithm is difficult. Although some fixed-compl...Show More
This paper presents designing of wireless local area network (WLAN) modem for video streaming in internet of things (IoT). Many concepts based on video streaming are introduced recently, and these systems need communication modem supporting high throughput for transmission of high quality of video. In this paper, WLAN modem using 2×2 multiple-input multiple-output (MIMO) orthogonal frequency divis...Show More
In previous work, we proposed the positive diagonal values (PDV) criterion, which is an exact-ML criterion of semidefinite relaxation (SDR) optimality condition. In this paper, we apply the PDV criterion to the tree-searching based MIMO detection by two ways. The first application is node-pruning algorithm for depth first search such as sphere decoding (SD). The proposed node-pruning algorithm usi...Show More
In this paper, we propose an extended version of sphere decoder (ESD) with the MMSE based enumeration for DL MU-MIMO systems. In previous work, we proposed the ESD which detects interference signals additionally. The ESD can achieve near-optimal performance, but it has much higher complexity than the existing SD. Therefore, this paper presents the improved enumeration based on MMSE. The proposed a...Show More
In this letter, we propose an exact maximum likelihood (ML) criterion based on semidefinite relaxation (SDR) in multiple-input multiple-output systems. Although a conventional SDR criterion for determining whether a symbol is the ML solution exists, its results cannot be guaranteed when noise is present. In place of the conventional criterion's positive semidefinite (PSD) discriminant, we propose ...Show More
In this paper, we propose a high performance multiple-input and multiple-output (MIMO) detection algorithm for downlink multiuser MIMO (DL MU-MIMO) with practical errors in IEEE 802.11ac systems. The DL MU-MIMO system using the precoding matrix, which is generated through imperfect channel state information caused by channel estimation error and channel feedback quantization error, has severe perf...Show More