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检索条件"主题词=modulation coding"
7024 条 记 录,以下是4751-4760 订阅
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Turbo coded modulation for systems with transmit and receive antenna diversity
Turbo coded modulation for systems with transmit and receive...
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Seamless Interconnection for Universal Services. Global Telecommunications Conference. GLOBECOM'99. (Cat. No.99CH37042)
作者: A. Stefanov T.M. Duman Telecommunications Research Center Electrical Engineering Department Arizona State University Tempe AZ USA
In a previous work Stefanov and Duman (see Proceedings of VTG-Fall, 1999) introduced turbo coded modulation for wireless communication systems with transmit and receive antenna diversity over block Rayleigh fading cha... 详细信息
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Supplement multi-media services for ACeS
Supplement multi-media services for ACeS
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MILCOM, Military Communications Conference
作者: You-Yun Xu Wen-Tao Song Han-Wen Luo Department of Electronic Engineering Shanghai Jiaotong University Shanghai China
Asia Cellular Satellite System (ACeS) is a $900 million fully financed project that uses two A2100AX geo satellites manufactured by Lockheed Martin. The services of the original design are voice, data, fax and paging ... 详细信息
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Transfer function bounds on performance of turbo codes for M-ary orthogonal signals
Transfer function bounds on performance of turbo codes for M...
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IEEE Conference and Exhibition on Global Telecommunications (GLOBECOM)
作者: T. Ohtsuki J.M. Kahn Department of Electrical Engineering Science University of Tokyo Noda Chiba Japan Department of Electrical Engineering and Computer Sciences University of California Berkeley CA USA
We obtain upper bounds on the bit-error rate (BER) for maximum-likelihood (ML) decoding of turbo codes constructed with uniform interleavers for M-ary orthogonal signals. We use transfer function bounding techniques t... 详细信息
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Efficient hierarchical broadcasting using multilevel codes
Efficient hierarchical broadcasting using multilevel codes
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Information Theory and Networking Workshop
作者: D.W. Schill Dong-Feng Yuan J.B. Huber Lehrstuhl für Nachrichtentechnik II Universität Erlangen Nurnberg Nurnberg Germany Shandong University Jinan China
Coded modulation schemes for hierarchical broadcasting employing multilevel coding (MLC) are considered for both, AWGN and flat Rayleigh fading channels. Design rules for signal constellations and codes are discussed.... 详细信息
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Performance of turbo coded modulation schemes in frequency selective Rayleigh fading channels
Performance of turbo coded modulation schemes in frequency s...
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IEEE Conference on Vehicular Technology (VTC)
作者: Gi Ho Park Nguyen Hoang Ha A.D.S. Jayalath R.M.A. Rajatheva SAT Asian Institute of Technology Klong Luang Pathum Thani Thailand
This paper presents the performance of different turbo coded modulation schemes in a Rayleigh multipath-fading channel. The performances of spectrally efficient multilevel modulation schemes combined with binary turbo... 详细信息
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MAP equalization of space-time coded signals over frequency selective channels
MAP equalization of space-time coded signals over frequency ...
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IEEE Conference on Wireless Communications and Networking
作者: G. Bauch A.F. Naguib Institute for Communication Engineering (LNT) Munich University of Technology Munich Germany Information Sciences Research-Shannon Laboratory AT and T Research Laboratories Florham Park NJ USA
This paper addresses the problem of equalization space-time codes with transmit diversity. We derive a symbol-by-symbol MAP equalizer/decoder for space-time coded signals over frequency selective channels. We describe... 详细信息
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The effect and influence of the slotted pilot scheme on the mobile CDMA systems
The effect and influence of the slotted pilot scheme on the ...
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IEEE Conference on Vehicular Technology (VTC)
作者: J. Nanyan W. Wenbo Y. Dacheng Beijing University of Posts and Telecommunications Beijing China
Phase-shift keying (PSK) is an attractive modulation scheme for mobile radio due to its high power efficiency at moderate bit error rates. However, an appropriate pilot signal is required to achieve reliable transmiss... 详细信息
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A reduced complexity decoding scheme for wireless applications
A reduced complexity decoding scheme for wireless applicatio...
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IEEE Annual Joint Conference: INFOCOM, IEEE Computer and Communications Societies
作者: M. Sajadieh F.R. Kschischang Bell Laboratory Lucent Technologies Inc. Holmdel NJ USA Department Electrical and Computer Eng. University of Toronto Toronto ONT Canada
Cellular transmission standards such as GSM and IS-54 produce data streams with varying degrees of significance at the source encoder level. We propose an unequal error protection scheme based on a non-uniform signal ... 详细信息
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1.6 Mbit/sec high capacity land mobile transmission characteristics of differential coding CDMA over multi-ray Rayleigh fading channel
1.6 Mbit/sec high capacity land mobile transmission characte...
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IEEE Conference on Vehicular Technology (VTC)
作者: M. Shamoto M. Ohba Kuixi Yin M. Kishi Denso Corporation Kariya Aichi Japan Nanjing Normal University Nanjing China Aichi Institute of Technology Toyota Aichi Japan
Differential coding CDMA (diffCDMA) is verified to conquer the fatal transmission error when communications are carried from high speed vehicles running through an urban environment with rapid multi-ray Rayleigh chann... 详细信息
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Rate-adaptive modulation techniques for infrared wireless communications
Rate-adaptive modulation techniques for infrared wireless co...
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IEEE International Conference on Communications (ICC)
作者: L. Diana J.M. Kahn Department of Electrical Engineering and Computer Sciences University of California Berkeley CA USA
While infrared links can support transmission at high bit rates, it is difficult to maintain a signal-to-noise ratio (SNR) sufficient to support these high bit rates under all conditions using reasonable transmitter p... 详细信息
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