Multiresolution broadcast for digital HDTV using joint source-channel coding

Ramchandran, Kannan; Ortega, Antonio; Uz, K.M.; Vetterli, Martin

doi:10.1109/icc.1992.268220

Cited by 42 publications

(59 citation statements)

References 4 publications

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“…For multipath Rayleigh fading channels, three paths L = 3 are considered, having equal average power gain, i.e. E[α 2 1 ] = E[α 2 2 ] = E[α 2 3 ] = 1/3, with time delays τ 1 = 0 , τ 2 = 2 and τ 3 = 5, respectively. …”

Section: Numerical Results and Discussionmentioning

confidence: 99%

“…C ONVENTIONAL multiresolution (MR) modulation [1][2][3], such as phase shift keying (PSK) [4] and quadrature amplitude modulation (QAM) [5], is a promising technique providing different quality of services (QoS) for transmitted bits according to their levels of importance. One advantage of the MR modulation is that it can support unequal error protection, i.e.…”

Section: Introductionmentioning

confidence: 99%

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Design and Performance Analysis of a New Multiresolution <inline-formula> <tex-math notation="LaTeX">$M$</tex-math></inline-formula>-Ary Differential Chaos Shift Keying Communication System

Wang

Cai

Chen

2015

IEEE Trans. Wireless Commun.

140

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A new multiresolution (MR) M-ary differential chaos shift keying (DCSK) modulation scheme is proposed in this paper. It is a promising technique to provide different quality of services (QoS) for transmitted bits within a symbol according to their different bit error rate (BER) requirements based on the principle of non-uniformly spaced constellations. The new system not only is simple, but also provides better anti-multipath fading performance against various spreading factors, which inherits the advantages of the conventional DCSK system. Furthermore, the proposed scheme and its multicarrier version further increase spectral efficiency and use lower energy consumption at the same bandwidth as compared to the conventional DCSK and its multicarrier (MC-DCSK) system. Explicit BER expressions of the new system are derived and analyzed over additive white Gaussian noise (AWGN) as well as multipath Rayleigh fading channels. All simulation results verify the prominent advantages of the new scheme and the accuracy of the new analytical approach. He has been a Distinguished Professor since December 2012. He holds 12 patents in the field of physical layer in digital communications and has published over 100 journal and conference papers. His current research interests are in the area of channel coding, joint source and channel coding, chaos modulation, and their applications to wireless communication and storage systems.Guofa Cai (S'13) received the B.Sc. degree in Communication Engineering

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Section: Numerical Results and Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design and Performance Analysis of a New Multiresolution <inline-formula> <tex-math notation="LaTeX">$M$</tex-math></inline-formula>-Ary Differential Chaos Shift Keying Communication System

Wang

Cai

Chen

2015

IEEE Trans. Wireless Commun.

140

View full text Add to dashboard Cite

show abstract

“…In addition, the cyclic shift delay (CSD) is implemented to prevent unintentional beamforming. We evaluate the system performance through comparing with three alternatives, namely SoftCast [12], SVC with Hierarchical Modulation [18]) (SVC-HM) and SVC with Time-Division multiplexing (SVC-TD). SoftCast is also implemented in MCR for codec and shares the same PHY with AirScale.…”

Section: A Implementationmentioning

confidence: 99%

Scalable Video Multicast for MU-MIMO Systems With Antenna Heterogeneity

Cui

Luo

Chen

et al. 2016

IEEE Trans. Circuits Syst. Video Technol.

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In contemporary multiuser multiple-input multiple output (MU-MIMO) systems, it is common for the reception devices to have varying number of antennas. When multicast is performed, the number of concurrent spatial streams is limited by the device with the least number of antennas, which prevents more capable devices from getting higher rates. In this paper, we address the antenna heterogeneity in wireless video multicast by the innovative design of multiple similar description (MSD) video coding and multiplexed space-time block coding (M-STBC). MSD coding generates multiple descriptions of a video and features that any linear combinations of the descriptions are decodable. The descriptions comprising of real numbers are further processed by transform and power allocation steps for efficient transmission in a power-constrained system. M-STBC puts symbols in similar descriptions to corresponding space-time positions and ensures decodability under any antenna settings and channel conditions. As a result, we build up a scalable video multicast system, named AirScale, which allows receivers with various number of antennas to decode from a single transmission and the reconstructed video quality improves with the number of equipped antennas. Evaluations on Sora shows that, in a {1, 2, 3, 4} × 4 system, AirScale provides baseline quality for 1-antenna receiver and much higher quality for multi-antenna receivers. The gain over SoftCast is up to 3.5 dB, 3.9 dB and 4.1 dB for 2, 3 and 4-antenna receivers, respectively.

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“…In [30], Bergmans showed that this technique achieves the optimal capacity for AWGN channels. Motivated by these promising results, many researchers have since considered coding and modulation strategies (e.g., [31], [32], [33], [34], [35], [36], [37]), as well as applications of superposition coding especially in the context of digital audio and video broadcasting [38]. More recently, superposition coding has been considered for standardization in cellular systems for broadcasting [39].…”

Section: B Superposition Coding For Packet Mixingmentioning

confidence: 99%

iPack: in-Network Packet Mixing for High Throughput Wireless Mesh Networks

Alimi

Ramjee

et al. 2008

2008 Proceedings IEEE INFOCOM - The 27th Conference on Computer Communications

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A major barrier for the adoption of wireless mesh networks is severe limits on throughput. Many in-network packet mixing techniques at the network layer [1], [2], [3] as well as the physical layer [4], [5], [6] have been shown to substantially improve throughput. However, the optimal mixing algorithm that maximizes throughput is still unknown. In this paper, we propose iP ack, an algorithm for in-network generation of composite packets that integrates coding at two different layers of the protocol stack: XOR-based network coding and physical layer superposition coding. Using extensive simulations, we find that the throughput gain of the joint coding iP ack algorithm is 30% more than the better performer of network coding and superposition coding in a wide range of scenarios, and automatically takes advantage of the best available coding opportunities. In a typical wireless mesh network when more traffic is between the clients and access points, the average throughput improvement of iP ack, our joint optimization scheduler, can be 324%, while there can be little gain (less than 10%) if network coding alone is used. We also validate our results by implementing iP ack on a small-scale testbed based on GNU Radio.

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Multiresolution broadcast for digital HDTV using joint source-channel coding

Cited by 42 publications

References 4 publications

Design and Performance Analysis of a New Multiresolution <inline-formula> <tex-math notation="LaTeX">$M$</tex-math></inline-formula>-Ary Differential Chaos Shift Keying Communication System

Design and Performance Analysis of a New Multiresolution <inline-formula> <tex-math notation="LaTeX">$M$</tex-math></inline-formula>-Ary Differential Chaos Shift Keying Communication System

Scalable Video Multicast for MU-MIMO Systems With Antenna Heterogeneity

iPack: in-Network Packet Mixing for High Throughput Wireless Mesh Networks

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