Yuan-Hao Huang

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A millimeter wave (mm-wave) communication system provides multi-Gb/s data rates in short-distance transmission. Because millimeter waves have short wavelength, transceivers can be composed of large antenna arrays to alleviate severe signal attenuation. Furthermore, the link performance can be improved by adopting precoding technology in multiple data stream(More)
This work proposes a communication digital signal processor (DSP) suitable for massive signal processing operations in orthogonal frequency division multiplexing (OFDM) and code-division multiple-access (CDMA) communication systems. The OFDM-based IEEE 802.11a wireless LAN transceiver and CDMA-based WCDMA uplink receiver are simulated to evaluate the(More)
The massive multiple-input multiple-output (MIMO) system utilizes a large number of antennas to enhance the throughput and reliability of 5G systems. Millimeter wave (mmWave) system is one of the important massive MIMO systems because its small wavelength allows the tightly package of large antenna array. This paper presents a low-complexity algorithm that(More)
In the orthogonal frequency-division multiple-access (OFDMA) communication system, resource allocation plays an important role in improving the transmission performance. The maximum spectral efficiency can be achieved through channel quality measurement, resource allocation, adaptive modulation, and so on. In this brief, we design a partial cached fast(More)
This paper presents a new audio coder that includes two techniques to improve the sound quality of the audio coding system. First, a forward masking model is proposed. This model exploits adaptation of the peripheral sensory and neural elements in the auditory system, which is often deemed as the cause of forward masking. In the proposed audio coder, the(More)
This paper presents an ultra-wideband (UWB) impulse-radio radar signal processing platform used to analyze human respiratory features. Conventional radar systems used in human detection only analyze human respiration rates or the response of a target. However, additional respiratory signal information is available that has not been explored using radar(More)
In this paper, we propose a VLSI design of a 4×4 MIMO-OFDMA down-link baseband receiver for the mobile communications. The receiver consists of synchronization, channel estimation/compensation, precode codebook search, and MIMO detection. To realize the closed-loop MIMO system in the mobile environment, we utilize the MMSE-OSIC algorithm for MIMO detector(More)