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In wireless networks, determining the error bit positions within a packet at the receiver can improve the wireless retransmission efficiency in wireless communications. In this paper, we propose an Error Position Estimating Coding (EPEC) scheme based on Error Estimating Coding (EEC). Specifically, we divide data bits into several groups and indicate the group number individually to implement error...
Underwater acoustic sensor networks (UASNs) are widely used in many application. However, the underwater acoustic channel poses many challenges for reliable data transmission protocol design. In this paper, we propose a new data transmission protocol based on Fountain codes and Selective-repeat ARQ scheme (FSR-ARQ). The new approach utilizes the packet error correction ability of rateless code and...
The problem of network disintegration has broad applications and recently has received growing attention, such as network confrontation and disintegration of harmful networks. This paper presents an optimized disintegration strategy model for complex networks and introduces the GA optimization method into the network disintegration problem to identify the optimal disintegration strategy, which is...
A 4K×2K H.265/HEVC video codec chip is fabricated in a 28nm CMOS process with a core area of 2.16mm2. This LSI chip integrates a dual-standard (H.265 and H.264) video codec and a series of prevalent (VC-1, WMV-7/8/9, VP-6/8, AVS, RM-8/9/10, MPEG-2/4) decoders into a single chip. It contains 3,558K logic gates and 308KB of internal SRAM. Moreover, it simplifies intra/inter-rate-distortion optimization...
This paper advocates a system-aided DRAM scaling strategy, where the rationale is to embrace, instead of striving to tackle, the difficulty of storage node aspect ratio (A/R) scaling. In current practice, scaling down of DRAM cell size must be strictly accompanied with proportional scaling up of storage node A/R, in order to maintain the storage node capacitance and hence error-free memory operation...
This paper presents a design of analog Receiver Front End based on IntraBody Communication theory, which mainly concentrates on the high data speed-2.5Mb/s and 5Mb/s, extremely long transmission distance-170cm, these specifications are seldom achieved in previous research but will play significant role and be necessary in the further IBC applications. The ISI issue during long transmission on body...
This paper presents a new temporal and inter-view side-information fusion algorithm for distributed multi-view video coding (DMVC). Unlike existing fusion algorithms in DMVC schemes that produce the fusion mask by finding the motion vector outliers, it introduces conditional random fields (CRF) to exploit the intrinsic geometric regularity and temporal consistency constraint in multi-view video sequences...
For communications and networking channels, coding techniques are widely used to correct errors in corrupted messages. The “Quality of Protection” (QoP) that can be provided via error correction directly affects the “Quality of Service” (QoS) experienced by users. The errors are commonly assumed to be substitution or erasure errors. Such systems rely on perfect synchronization so that no bit is deleted...
The overlapped time-frequency two dimensional multiplexing system (OvHDM, Overlapped Hybrid Division Multiplexing) can significantly improve the spectrum efficiency of communication system. The system can be described as a vector convolutional encoding constraint model and the optimum detection algorithm is maximum likelihood sequence detection (MLSD), but the algorithm causes large detection delay...
A System-on-Chip Design of VLD (Variable Length Decoder) in multi-standard video decoder is proposed in this paper. Our design supports all the popular video compression standards, e.g. MPEG-1, MPEG-2, MPEG-4, H.264, AVS, RealVideo. Benefit from its low power, the design is especially suitable for wearable multimedia applications. Simulation results show that the whole design takes an area of 1.04mm2,...
2D bar codes were designed to carry significantly more data than its 1D counterpart. Thanks to the popular combination of cameras and mobile phones, it will naturally bring great commercial value to use the camera phone for 2D bar code reading. This paper addresses the problem of specific 2D bar code design for mobile phones and introduces a low-level solution of matrix codes. At the same time, we...
This paper introduces advanced channel codes turbo and LDPC to distributed video coding (DVC), and compares their performance in the whole system. From the simulation results, we can find that the LDPC codes are superior to turbo codes when the video sequence has high motion. Additionally, whether turbo or LDPC, the DVC system outperforms the conventional intra-frame coding though underperforms conventional...
Bar codes are being widely used in many fields for applications of great commercial value. By encoding a series of characters or symbols, bar codes are able to both carry explicit information and a database key. Nowadays, The availability of imaging phones provides people a mobile platform for decoding bar code rather than the use of the conventional scanner which is lack of mobility. However, the...
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