|
|
|
题名
|
作者
|
年代
|
出处
|
被引量
|
| 1 | High Robust Broadcasting over DTMB-A with Low-rate LDPC Codes显示文摘As the 2nd generation digital terrestrial television broadcasting(DTTB)standard,digital terrestrial/television multimedia broadcasting-advanced(DTMB-A)can provide higher spectrum efficiency and transmission reliability by adopting flexible frame structure and advanced forward error correction coding compared with the 1 st generation DTTB systems.In order to increase the flexibility and robustness of the DTTB network,the frequency reuse scheme of factor one(reuse-1)is proposed,where the same RF channel is used by different stations covering the adjacent service areas.However,it demands a very low carrier-tonoise ratio(C/N)threshold below 0 dB at the DTTB physical layer.In this paper,a robust broadcasting technique is proposed based on DTMB-A with newly designed low-rate low density parity check(LDPC)codes.By adopting quasi-cyclic(QC)Raptor-like structure and progressive lifting method,the high performance low-rate LDPC codes are designed supporting multiple code lengths.Both density-evolution analyses and laboratory measurements demonstrate that DTMB-A with low-rate coding can complete the demodulation reliably with the C/N threshold below0 d B,which is one important necessary condition to support frequency reuse-1 scheme. | Chao Zhang Kewu Peng Zhitong He Yonglin Xue Hui Yang | 2022 | China Communications2022，19，3： | 2 |
| 2 | Labeling optimization for BICM-ID systems 显示文摘 | YANG Zhixing XIE Qiuliang PENG Kewu el al | 2010 | IEEE Comrnunications Letters2010，14，11： | 1 |
| 3 | Embedded image compression based on wavelet pixel classification and sorting 显示文摘 | Peng Kewu Kieffer J C | 2004 | IEEE Transactions on Image Processing2004，13，8： | 1 |
| 4 | Chronic bronchitis leads to accelerated hyperinflation in COPD patients during exercise显示文摘 | Wen Zhang Haitao Lu Liyue Peng Xiaoxia Ren Yong Lu Li An Hong Zhang Xiaoyue Tan Xingguo Sun Kewu Huang | 2015 | Respirology2015，，4： | 1 |
| 5 | High- Throughput QC-LDPC Decoders显示文摘 | JIANG Nan PENG Kewu SONG Jian | 2009 | IEEE Transactions on Broadcasting2009，55，2： | 1 |
| 6 | Embedded image compression based on wavelet pixel classification and sorting 显示文摘 | Peng Kewu Kieffer J C | 2004 | IEEE Transactions on Image Processing2004，13，： | 1 |
| 7 | Irregular Mapping and its Application in Bit-Inter- leaved LDPC Coded Modulation With Iterative Demapping and Decoding显示文摘 | Zaishuang Liu Kewu Peng Tao Cheng Zhaocheng Wang | 2011 | IEEE Transactions on Broadcasting2011，57，3： | 1 |
| 8 | Labeling Optimization for BICM-ID Systems 显示文摘 | Yang Zhixing Xie Qiuliang Peng Kewu et ol | 2010 | IEEE Communications Letters2010，14，11： | 1 |
| 9 | Study on mechanical properties and fracture mechanisms of B4C-CeB6/Al composites 显示文摘 | Peng Kewu Wu Wenyuan Xu Jingyu Tu Ganfeng and Ning Fuhu | 2007 | Journal of Rare Earths2007，25，： | 1 |
| 10 | EXIT-aided bit map- ping sesign for LDPC coded modulation with APSK constellations 显示文摘 | CHENG Tao PENG Kewu SONG Jian | 2012 | IEEE Communications Letters2012，16，6： | 1 |
| 11 | Non-Uniform APSK Optimization for BICM Systems显示文摘Traditional Amplitude Phase Shift Keying(APSK) consists of rings with points uniformly spaced. By giving up this uniform-spacing feature, we propose an APSK optimization method based on the uniform APSK with Gray labeling(Gray-APSK). The aim of the optimization is to maximize the Generalized Mutual Information(GMI)of Bit-Interleaved Coded Modulation(BICM) for the targeted code rate and channel. We show that our optimized non-uniform APSK could offer further performance gain compared with the conventional uniform Gray-APSK and considerably outperforms the traditional quadrature amplitude modulation at the targeted SNR and channel. | Keqian Yan Kewu Peng Fang Yang Jian Song | 2015 | Tsinghua Science and Technology2015，20，2： | 0 |
| 12 | Analysis of Outage Capacity of NOMA: SIC vs. JD显示文摘In fifth-generation wireless communication networks, Non-Orthogonal Multiple Access(NOMA) has attracted much attention in both academic and industrial fields because of its higher spectral efficiency in comparison with orthogonal multiple access. Recently, numerous uplink NOMA techniques have been proposed,some of which are based on Successive Interference Cancellation(SIC) and others on Joint Decoding(JD, or simultaneous decoding). In this study, we analyze the outage capacities of SIC and JD in the case of single-block transmission over a two-user Gaussian multiple-access channel with partial channel state information at transmitter from the perspective of information theory. Results of the analysis and numerals show that compared to SIC, JD can achieve a sum-rate gain of up to 10% or sum-power gain of 0.8 dB. | Shuang Chen Kewu Peng Huangpin Jin Jian Song | 2016 | Tsinghua Science and Technology2016，21，5： | 0 |
您所在的机构暂未开通此部分的功能，请联系管理员