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Browsing by Author "Radio and Mobile Communication Systems"
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A 10-b Fourth-Order Quadrature Bandpass Continuous-Time ΣΔ Modulator With 33-MHz Bandwidth for a Dual-Channel GNSS Receiver
Zhang, Junfeng; Xu, Yang; Zhang, Zehong; Sun, Yichuang; Wang, Zhihua; Chi, Baoyong (2017-04-01)A fourth-order quadrature bandpass continuous-time sigma-delta modulator for a dual-channel global navigation satellite system (GNSS) receiver is presented. With a bandwidth (BW) of 33 MHz, the modulator is able to digitalize ... -
A 14-mW PLL-less receiver in 0.18-μm CMOS for Chinese electronic toll collection standard
He, Xiaofeng; Zhu, Xi; Duan, Lian; Sun, Yichuang; Ma, Chengyan (2014-10-01)The design of a 14-mW receiver without phase-locked loop for the Chinese electronic toll collection (ETC) system in a standard 0.18-μm CMOS process is presented in this brief. Since the previously published work was mainly ... -
Average transmit power of adaptive ZF very large multi-user and multi-antenna systems
Yue, Dian Wu; Sun, Yichuang (2015-04-01)In this paper, we investigate adaptive zero-forcing uplink transmission for very large multi-user multi-antenna systems in Rayleigh fading environments. We assume that the number of antennas at the base station (denoted ... -
Current-mode high-frequency wavelet filter based on leap-frog multiple-loop feedback structure
Zhao, Wenshan; Sun, Yichuang (2013-12-01)A method is proposed to realize high-frequency wavelet transform in analogue filter by employing Gm-C circuits and current-mode leap-frog multiple loop feedback structure in this paper. Also, to enhance the performance, ... -
Design for testability of high-order OTA-C filters
Hasan, Masood ul; Zhu, Yanqing; Sun, Yichuang (2016-10-04)A study of oscillation-based test for high-order Operational Transconductance Amplifier-C (OTA-C) filters is presented. The method is based on partition of a high-order filter into second-order filter functions. The opening ... -
Development of a vibration measurement device based on a MEMS accelerometer
Onuorah, Chinedum Anthony; Chaychian, Sara; Sun, Yichuang; Siau, Johann (SciTePress, 2017)This paper proposes a portable and low cost vibration detection device. Enhanced vibration calculation, reduction of error and low storage memory are complementary accomplishments of this research. The device consists of ... -
Duality of antennas and subcarriers in massive MIMO-OFDM downlink system
Bannour, Ahmed; Sun, Yichuang (2015-07-06)Massive multiple-input-multiple-output (MIMO) can significantly outperform conventional MIMO in terms of spectrum efficiency and link reliability. For massive MIMO, there are still theoretical and practical issues that ... -
Efficient space-frequency block coded pilot-aided channel estimation method for multiple-input-multiple-output orthogonal frequency division multiplexing systems over mobile frequency-selective fading channels
Delestre, Fabien; Owojaiye, Gbenga; Sun, Yichuang (2014-04-17)An iterative pilot-aided channel estimation technique for space-frequency block coded (SFBC) multiple-input multiple-output orthogonal frequency division multiplexing systems is proposed. Traditionally, when channel ... -
An elliptic filter based on MLF LF structure for wireless receiver
Zhu, Xi; Sun, Yichuang (Institute of Electrical and Electronics Engineers (IEEE), 2013-12-01)A CMOS fifth-order Gm-C elliptic lowpass filter based on the voltage-mode multiple loop feedback (MLF) leap-frog (LF) configuration is designed. The filter is implemented using a fully-differential linear operational ... -
A Fully-Integrated Reconfigurable Dual-Band Transceiver for Short Range Wireless Communications in 180 nm CMOS
Yu, Xiaobao; Wei, Meng; Yin, Yun; Song, Ying; Han, Siyang; Liu, Qiongbing; Jin, Zongming; Liu, Xiliang; Wang, Zhihua; Sun, Yichuang; Chi, Baoyong (2015-08-27)A fully-integrated reconfigurable dual-band (760-960 MHz and 2.4-2.5 GHz) transceiver (TRX) for short range wireless communications is presented. The TRX consists of two individually-optimized RF front-ends for each band ... -
Guest editorial for the special issue on software-defined radio transceivers and circuits for 5G wireless communications
Sun, Yichuang; Chi, Baoyong; Zhang, Heng (2016-01-01) -
A High Efficiency and Low Ripple Cross-Coupled Charge Pump Circuit
Ma, Minglin; Cai, Xinglong; Sun, Yichuang (2017-09-19)A fully integrated cross-coupled charge pump circuit with four-clock signals and a new method of body bias have been proposed. The new clock scheme eliminates all of the reversion power loss and reduces the ripple voltage. ... -
Measurement uncertainty and cable balance - With implications for the CDNE-M and CMAD
Lauder, David M.; Marshall, Richard C. (Institute of Electrical and Electronics Engineers (IEEE), 2014-10-20)The emulation of the real-world of mains power cables in EMC test methods can be improved. We show that for devices with significant differential-mode emission in the frequency range 150 kHz to 30 MHz, the impedance balance ... -
A New Technique for the Design of Multi-Phase Voltage Controlled Oscillators
Sun, Jingru; Huang, Pan; Sun, Yichuang (2017-07-01)In this work, a novel circuit structure for second-harmonic multi-phase voltage controlled oscillator (MVCO) is presented. The proposed MVCO is composed of (Formula presented.) ((Formula presented.) being an integer number ... -
A Novel Algebraic Carrier Frequency Offset Estimator for ASTC-MIMO-OFDM Systems Over a Correlated Frequency-Selective Channel
Bannour, A.; Sun, Yichuang; Lassaad Ammari, M.; Delestre, Fabien; Bouallegue, R. (2012-07)This paper presents a new algebraic carrier frequency offset (CFO) estimation technique for multiple-input-multiple-output (MIMO) orthogonal frequency-division multiplexing (OFDM) system, to overcome the sensitivity of ... -
Optimal analog wavelet bases construction using hybrid optimization algorithm
Li, Hongmin; He, Yigang; Sun, Yichuang (2016-12-01)An approach for the construction of optimal analog wavelet bases is presented. First, the definition of an analog wavelet is given. Based on the definition and the least-squares error criterion, a general framework for ... -
Optimal Quality-of-Service Scheduling for Energy-Harvesting Powered Wireless Communications
Chen, Xiaojing; Ni, Wei; Wang, Xin; Sun, Yichuang (2016-01-19)In this paper, a new dynamic string tautening algorithm is proposed to generate the most energy-efficient off-line schedule for delay-limited traffic of transmitters with non-negligible circuit power. The algorithm is based ... -
Oscillation-based DFT for Second-order Bandpass OTA-C Filters
Hasan, Masood ul; Zhu, Yanqing; Sun, Yichuang (2017-09-06)This paper describes a design for testability technique for second-order bandpass operational transconductance amplifier and capacitor filters using an oscillation-based test topology. The oscillation-based test structure ... -
Provisioning quality-of-service to energy harvesting wireless communications
Chen, Xiaojing; Ni, Wei; Wang, Xin; Sun, Yichuang (2015-04-08)Energy harvesting (EH) is an innovative way to build long-term and self-sustainable wireless networks. However, an inconstant EH rate may have an adverse effect on the quality-of-service (QoS) of wireless traffic, such as ... -
A PSO Method for Wavelet Approximation
Li, Hongmin; He, Yigang; Sun, Yichuang (2014-02-15)For implementing wavelet transform in analog hardware systems with very low power consumption and small size, a particle swarm optimization method is employed in the approximating of wavelet functions. First, utilizing the ...