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Current multi-user detection scheme for sparse code multiple access (SCMA) is iterative message passing algorithm (MPA) in which the message update strategy is in a parallel manner. To take full advantage of MPA's feature of parallelism, this letter proposes a hardware implementation strategy of max-log MPA decoder used in SCMA systems with soft baseband, which is based on general-purpose computing...
In this paper, an adaptive cooperation scheme is presented for bidirectional communication between two nodes, where the non-relay direct transmission and the one- or two-way relaying diversity transmission are jointly considered. The results show that the proposed scheme obtains lower outage probability than the conventional bidirectional communication methods.
The analog implementation of error control decoders is a competitive methodology compared with the digital implementation in power efficiency and throughput. In order to detect uncorrectable frames and early stop the iterative decoding of low-density parity check (LDPC) analog decoders, a probability stopping block using probabilities of satisfied checks is proposed. Simulation results show that the...
With the increasing demand of transmission speed and more robust quality of service, the capacity constrained backhaul gradually becomes bottleneck in cooperative wireless networks, e.g. in Joint Processing mode of LTE-Advanced Pro. This paper focuses the fact of resource allocation with limited backhaul capacity in uplink cooperative networks, where two base stations (BS) equipped with single-antenna...
I-frame affects image quality seriously, but costs enormous bits in video coding processing. In order to optimize the increasing bit rate caused by I-frame, we design a novel video codec based on residual image for the latest video coding standard HEVC. An appropriate method to obtain residual image is proposed depend on the characteristic analysis. The proposed codec reduces considerably by up to...
A general receiver framework associated with multicarrier schemes is presented towards the doubly dispersive medium under fast-mobile environments. Here, by reexamining the channel impacts via Set theory, a new valuable finding in this work demonstrates that besides the common knowledge of the ISI/ICI effect led by dispersions, the permanent information damages is additionally incurred in current...
A highly integrated system-on-chip (SOC) can be a viable replacement for a design based on legacy X86 series based design. Embedded processors for aviation field and industrial controls are the examples for aforesaid proposal. To reduce the high volume of old system, we design and implement a SOC embodying a low power X86 instruction compatible 32-bit CISC microprocessor. Outside the processor core,...
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