|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | Low-Density Parity-Check Codes for Noncoherent UWB Communication Systems显示文摘In order to guarantee reliable data transmission, powerful channel coding techniques are usually required in noncoherent ultra-wideband(UWB) communication systems. Accordingly, several forward error correction(FEC) codes, such as Reed-Solomon and convolutional codes have been used in noncoherent UWB systems to improve the bit error rate(BER) performance. In this paper, low-density parity-check(LDPC) codes are further studied as more powerful FEC candidates for noncoherent UWB systems. Two LDPC codes and the corresponding decoding procedures are presented for noncoherent UWB systems. Moreover, performance comparison between the LDPC codes and other FEC codes are provided for three major noncoherent UWB communication systems, namely, noncoherent pulse position modulation(NC-PPM), transmitted reference(TR) and transmitted reference pulse cluster(TRPC). Both theoretical analysis and simulation results show that the two investigated LDPC codes outperform other existing FEC codes with limited penalty in terms of complexity and therefore they are promising FEC candidates for noncoherent UWB systems with low-cost and low-power consumption. | Zhonghua Liang Junshan Zang Xiaojun Yang Xiaodai Dong Huansheng Song | 2017 | China Communications2017，14，7： | 2 |
| 2 | Integration Interval Determination and Decision Threshold Optimization for Improved TRPC-UWB Communication Systems显示文摘Integration interval and decision threshold issues were investigated for improved transmitted reference pulse cluster(iTRPC-)ultra-wideband(UWB)systems. Our analysis shows that the bit error rate(BER)performance of iTRPC-UWB systems can be significantly improved via integration interval determination(IID)and decision threshold optimization. For this purpose,two modifications can be made at the autocorrelation receiver as follows. Firstly,the IID processing is performed for autocorrelation operation to capture multi-path energy as much as possible. Secondly,adaptive decision threshold(ADT)instead of zero decision threshold(ZDT),is used as estimated optimal decision threshold for symbol detection. Performance of iTRPCUWB systems using IID and ADT was evaluated in realistic IEEE 802.15.4a UWB channel models and the simulation results demonstrated our theoretical analysis. | Zhonghua Liang Junshan Zang Xiaojun Yang Xiaodai Dong Huansheng Song | 2017 | China Communications2017，14，5： | 2 |
| 3 | Locally Minimum Storage Regenerating Codes in Distributed Cloud Storage Systems显示文摘In distributed cloud storage systems, inevitably there exist multiple node failures at the same time. The existing methods of regenerating codes, including minimum storage regenerating(MSR) codes and minimum bandwidth regenerating(MBR) codes, are mainly to repair one single or several failed nodes, unable to meet the repair need of distributed cloud storage systems. In this paper, we present locally minimum storage regenerating(LMSR) codes to recover multiple failed nodes at the same time. Specifically, the nodes in distributed cloud storage systems are divided into multiple local groups, and in each local group(4, 2) or(5, 3) MSR codes are constructed. Moreover, the grouping method of storage nodes and the repairing process of failed nodes in local groups are studied. Theoretical analysis shows that LMSR codes can achieve the same storage overhead as MSR codes. Furthermore, we verify by means of simulation that, compared with MSR codes, LMSR codes can reduce the repair bandwidth and disk I/O overhead effectively. | Jing Wang Wei Luo Wei Liang Xiangyang Liu Xiaodai Dong | 2017 | China Communications2017，14，11： | 2 |
| 4 | Error Performance of Selection Combining and Switched Combining Systems in Rayleigh Fading Channels With Imperfect Channel Estimation显示文摘 | Lei Xiao Xiaodai Dong | 2005 | IEEE2005，54，06： | 1 |
| 5 | On Diversity Reception of Narrow-Band 16 STAR-QAM in fast Rician Fading 显示文摘 | TJENG THIANG TJHUNG XIAODAI DONG | 1997 | Vehicular Technology IEEE Transactions on1997，46，4： | 1 |
| 6 | Cyclic prefixed single cariier transmission in uhra-wideband communications显示文摘 | Wang Yue Dong Xiaodai | 2006 | IEEE Transaction on Wireless Communications2006，5，8： | 1 |
| 7 | Spectrum shaping and NBI suppression in UWB communications 显示文摘 | WANG Yue DONG Xiaodai FAIR I J | 2007 | IEEE Transactions on Wireless Communications2007，5，6： | 1 |
| 8 | Comparison of frequency offset and timing offset effects on the performance of SC-FDE and OFDM over UWB channels显示文摘 | Wang Yue Dong Xiaodai | 2009 | IEEE Transactions on Vehicular Technology2009，58，1： | 1 |
| 9 | Frequency domain channel estimation for SC-FDE in UWB communications显示文摘 | WANG Yue DONG Xiaodai | | 0，，12： | 1 |
| 10 | Hybrid PPM-BPSK for transmitted reference pulse cluster systems in UWB and 60-GHz channels显示文摘 | Dai Yongyu Dong Xiaodai | 2014 | IEEE Wireless Communications Letters2014，3，6： | 1 |
| 11 | Improved lowcomplexity transmitted reference pulse cluster for ultra-wideband communications显示文摘 | Liang Zhonghua Dong Xiaodai Jin Li | 2012 | IET Commun2012，6，7： | 1 |
| 12 | Performance of a new transmitted reference pulse cluster system for UWB communications显示文摘 | Dong Xiaodai Jin Li ORLIK P | 2008 | IEEE Transactions on Vehicular Tecnhology2008，57，5： | 1 |
| 13 | Integration interval determination algorithms for BER minimization in UWB transmitted reference pulse cluster systems显示文摘 | Jin Li Dong Xiaodai Liang Zhonghua | 2010 | IEEE Transactions on Wireless Communications2010，9，8： | 1 |
| 14 | Performance of transmitted reference pulse cluster ultra‐wideband systems with forward error correction显示文摘 | Zhonghua Liang Xiaodai Dong T. Aaron Gulliver Xuewen Liao | 2014 | Syst2014，，2： | 1 |
| 15 | Linear interpolation in pilot symbol assited channel estimation for OFDM显示文摘 | Dong Xiaodai Lu Wusheng Song C K | 2007 | IEEE Trans on Wireless Communications2007，6，5： | 1 |
| 16 | Multiple (FO mitigation in amplify and forward cooperative OFDM transmission显示文摘 | Yuzhe Yao Xiaodai Dong | 2012 | IEEE Transaction on Communications2012，12，60： | 1 |
| 17 | Performance of Rake-MMSE-equalizer for UWB Communications显示文摘 | Mohsen Eslami Dong Xiaodai | 2005 | IEEE Communication Letters2005，9，6： | 1 |
| 18 | Multiple access and data reconstruction in wireless sensor networks based on compressed sensing显示文摘 | Xue Tong Dong Xiaodai Shi Yi | 2013 | IEEE Transactions on Wireless Communications2013，12，7： | 1 |
| 19 | MIMO relaying broadcast channels with linear precoding and quantized channel state information feedback显示文摘 | Xu Wei Dong Xiaodai Lu Wusheng | 2010 | IEEE Trans on Signal Processing2010，58，10： | 1 |
| 20 | Hybrid beamforming design for mmWave OFDM distributed antenna systems显示文摘This paper presents a hybrid beamforming design for millimeter-wave(mm Wave)orthogonal frequency division multiplexing(OFDM)distributed antenna systems(DASs).First,we derive a downlink signal transmission model that considers the delay spread differences(DSDs)caused by the distributed nature of the network.We then propose a cooperative wideband hybrid beamforming method under the transmitting power constraints of each remote access unit.In a simulation study,the proposed method performed comparably to fully-digital beamforming,even when operated with practical finite-resolution phase shifters.We further confirm that the DSDs are the dominant cause of performance degradation in mm Wave OFDM DASs. | Yu ZHANG Dongming WANG Yiming HUO Xiaodai DONG Xiaohu YOU | 2020 | Science China(Information Sciences)2020，63，9： | 1 |
您所在的机构暂未开通此部分的功能，请联系管理员