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| 1 | Self-mixed self-interference analog cancellation in full-duplex communications显示文摘Rather than using existing self-interference cancellation methods, which essentially consist of reconstruction and subtraction, this paper proposes a novel approach, based on multiplication, to cancel selfinterference in the analog domain in full-duplex communications. This approach is called self-mixed selfinterference analog cancellation(SM-SIAC). Moreover, rather than using an individual analog cancellation circuit in existing self-interference cancellation methods, SM-SIAC can merge the analog cancellation circuit and the receiver. SM-SIAC is configured with three auto-tuning loops, consisting of one delay loop and two gain loops. SM-SIAC is further simplified with the Gaussian minimum shift keying(GMSK) self-interference signal.When these loops converge, the paper analyzes the cancellation capacity and derives a closed-form expression for the quadrature amplitude modulation self-interference signal and the GMSK self-interference signal. Simulation results illustrate the convergence of the gain loops and the cancellation capacity in the presence of engineering errors. | Hongtao LU Shihai SHAO Kai DENG Youxi TANG | 2016 | Science China(Information Sciences)2016，59，4： | 5 |
| 2 | Mitigating spectrum sensing data falsification attacks in hard-decision combining cooperative spectrum sensing显示文摘In this paper we propose a simple yet robust secure cooperative spectrum sensing scheme with hard decision combining for Opportunistic Spectrum Access(OSA)networks.Based on the historical sensing records and the assistance of trusted OSA nodes,the proposed approach effectively mitigates spectrum sensing data falsification attacks by excluding misbehaving OSA nodes from the process of cooperation.Both analyses and numerical results are provided for various performance metrics,including overall detection probability.Comparison of the proposed method with existing well-known secure spectrum sensing methods verifies the robustness and effectiveness of the proposed scheme. | ZENG Kun PENG QiHang TANG YouXi | 2014 | Science China(Information Sciences)2014，57，4： | 4 |
| 3 | Timing Acquisition for Distributed Antenna Systems with the Cooperation of Two Remote Antennas显示文摘 | QING Chaojin SHAO Shihai TANG Youxi | 2011 | Chinese Journal of Electronics2011，20，3： | 2 |
| 4 | Novel multi-tap analog self-interference cancellation architecture with shared phase-shifter for full-duplex communications显示文摘Multi-tap analog self-interference(SI) cancellation structures adopt parallel taps to reconstruct and then cancel SI in full-duplex radios. Each tap is usually comprised of one fixed delay line, one variable attenuator, and one optional variable phase shifter. To balance the quantity of the variable phase shifters and the achievable SI cancellation(SIC) performance, this paper proposes a novel analog SIC cancellation structure,called shared-phase-shifter constrained multi-tap structure(SMTS). In the proposed architecture, all taps share one phase shifter to emulate the dominated phase offset of the SI channel, which reduces the complexity of the implementation of the multi-tap analog SIC structure and avoids the SIC performance degradation. Then, the proposed SMTS and the existing structures are compared in terms of SIC performance and power dissipation.Finally, extensive simulations show that SMTS provides the close-to-optimal SIC performance as well as the lowest power dissipation relative to the existing multi-tap structures. | Hongtao LU Chuan HUANG Shihai SHAO Youxi TANG | 2017 | Science China(Information Sciences)2017，60，10： | 2 |
| 5 | Timing Acquisition for Distributed Antenna Systems by Exploiting the Advantages of Cooperation over Flat-Fading Channels显示文摘 | QING Chaojin SHAO Shihai TANG Youxi | 2011 | Chinese Journal of Electronics2011，20，2： | 2 |
| 6 | ESTIMATION OF CARRIER FREQUENCY OFFSETS FOR MIMO SYSTEMS WITH DISTRIBUTED TRANSMIT ANTENNAS显示文摘The problem of estimating the carrier frequency offsets in Multiple-Input Multiple-Output (MIMO) systems with distributed transmit antennas is addressed. It is supposed that the transmit antennas are distributed while the receive antennas are still centralized, and the general case where both the time delays and the frequency offsets are possibly different for each transmit antenna is considered. The channel is supposed to be frequency flat, and the macroscopic fading is also taken into consideration. A carrier frequency offset estimator based on Maximum Likelihood (ML) is proposed, which can separately estimate the frequency offset for each transmit antenna and exploit the spatial diversity. The Cramer-Rao Bound (CRB) for synchronous MIMO (i.e., the time delays for each transmit antenna are all equal) is also derived. Simulation results are given to illustrate the per- formance of the estimator and compare it with the CRB. It is shown that the estimator can provide satisfactory frequency offset estimates and its performance is close to the CRB for the Signal-to-Noise Ratio (SNR) below 20dB. | Deng Kai Tang Youxi Lei Xia Li Shaoqian | 2007 | Journal of Electronics(China)2007，24，4： | 2 |
| 7 | Performance of an M-QAM full-duplex wireless system with a nonlinear amplifier显示文摘The effect of amplifier nonlinearity is analyzed for M-QAM full-duplex communications in additive white Gaussian noise channels. Two classical memoryless nonlinear amplifier models, i.e., a traveling-wave tube amplifier and a solid-state power amplifier, are considered. An analytical expression for the bit error ratio is derived using a characteristic function and numerical integration. Theoretical results show perfect agreement with those obtained by simulation. The analytical results could be used to evaluate the degradation in performance of an M-QAM full-duplex system caused by amplifier nonlinearity, and will be helpful in finding the optimal static operating point of an amplifier. | Zhaojun HE Wanzhi MA Shihai SHAO Fei WU Chaojin QING Youxi TANG | 2016 | Science China(Information Sciences)2016，59，10： | 2 |
| 8 | Performance Analysis of A Modified V-BLAST Systems with Delay Offsets Using Zero-foring Detestion显示文摘 | Shao Shihai Tang Youxi Kong Ting | 2007 | IEEE Transactions on Vehicular Technology2007，56，06： | 1 |
| 9 | Performance analysis of a modified V-BLAST system with delay offsets using zero-forcing detection显示文摘 | Shao Shihai Tang Youxi | | 0，，06： | 1 |
| 10 | A novel frequency offset estimation method for OFDM systems with large estimation range 显示文摘 | Chunlin Yah Shaoqian Li Youxi Tang Jiayi Fang | 2006 | IEEE Transaction on Broadcasting (S0018-9316)2006，52，1： | 1 |
| 11 | Per- formance analysis of a modified V-BLAST system with delay offsets using zero-forcing detection 显示文摘 | SHAO Shihai TANG Youxi KONG Ting | 2007 | IEEE Transactions on Vehicular Technology2007，56，6： | 1 |
| 12 | Layeredspace-time codes over Ricean fading channels by reduc- ing the correlation of spatial shaping pulses显示文摘 | SHAO Shihai TANG Youxi MA Wanzhi | 2009 | IEEE Transactions on Wireless Communications2009，8，2： | 1 |
| 13 | Layered space-time codes over Pdcean fading channels by reducing the correlation of spatial shaping pulses显示文摘 | Shihai Shao Tang Youxi and Ma Wanzhi | 2009 | IEEE Transactions on Wireless Communications2009，8，2： | 1 |
| 14 | AN IMPROVED AND EFFICIENT DETECTION SCHEME FOR V-BLAST SYSTEMS WITH QAM MODULATION显示文摘The paper proposed an improved Ordered Successive Interference Cancellation(OSIC) detection scheme for V-BLAST systems with square/rectangular Quadrature Amplitude Modulation(QAM) modulation.It utilizes an equivalent real-valued vector expression of relationship between transmit signals and received signals,exploits the constellation's product-form structure and can eventually make the order,in which components of the transmit signals vector are extracted,more 'optimal' in some sense.Thereby,it can offer an improved error probability as compared to the conventional OSIC detection scheme.In addition,the paper also proposes an efficient projection al-gorithm to calculate nulling vectors in a simple recursive fashion in order to avoid the vast increase of complexity,which is due to the fact that the original complex N -dimensional data vector and M×N channel matrix are transformed into a real 2N -dimensional data vector and a real 2M ×2N channel matrix respectively.A scrutinous complexity analysis shows that the complexity increases by only 33% as compared to the conventional scheme. | Lin Huajiong Tang Youxi Shao Shihai | 2008 | Journal of Electronics(China)2008，25，5： | 1 |
| 15 | A Novel Frequency Offset Estimation Method for OFDM Systems With Large Estimation Range 显示文摘 | Yan Chunlin Li Shaoqian Tang Youxi | 2006 | IEEE Transactions on2006，52，1： | 1 |
| 16 | Robust Control of uncertain linear systems with Mutiple State Delays-LMI Approach显示文摘 | Cheng Chuwang Sun Youxie Tang Bingyong | 1998 | Journal of China Textile University1998，，3： | 1 |
| 17 | A novel frequency offset estimation method for OFDM systems with large estimation range显示文摘 | Yan Chunlin Li Shaoqian Tang Youxi | 2006 | IEEE Transactions on Broadcasting2006，52，1： | 1 |
| 18 | Self-interference cancellation for cooperative jamming communications with nonideal alignment and channel equalization显示文摘For the security of wireless communications, cooperative jamming can be used to intentionally degrade the signal-to-noise ratios received by eavesdroppers. Unfortunately, this jamming may also propagate to the legal receiver and then become a harmful self-interference(SI), which should be cancelled for reliable detection of the desired signal. In this paper, by comprehensively considering nonideal time-frequency alignment and channel equalization, SI-cancellation capability is investigated for the additive white Gaussian noise channel. Theoretical and simulation results demonstrated that the impact of the frequency alignment error is more serious than that of the time alignment and channel equalization errors. Moreover, it is illustrated that weaker SI power can tolerate a larger range of those nonidealities. | Wenbo GUO Yimin HE Hongzhi ZHAO Shihai SHAO Youxi TANG | 2021 | Science China(Information Sciences)2021，64，11： | 1 |
| 19 | Optimal antenna location for STBC-OFDM downlink with distributed transmit antennas in linear cells显示文摘 | SHEN Ying TANG Youxi KONG Ting | 2007 | Communications Letters IEEE2007，11，5： | 1 |
| 20 | Optimal an- tenna location for STBC-OFDM downlink with distributed transmit antennas in linear cells 显示文摘 | Shen Ying Tang Youxi Kong Ting | 2007 | IEEE Communica- tions Letters2007，11，5： | 1 |
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