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In this paper, we derive an effective SINR mapping algorithm based on Mutual Information (MI) Effective SINR Metric (ESM) model for 256QAM modulation system. Since recently 256QAM modulation is proposed in 3GPP LTE-A Rel.12 and IEEE 802.11ac standard, the design of Link-to-System (L2S) interface for 256QAM needs to be considered. Based on the Log Likelihood Ratio (LLR) receiver model, we derive the...
Polar codes have a regular-recursive structure, which can efficiently be mapped to hardware for practical applications. A good quantization scheme plays a great important role in hardware implementation. In this paper, three uniform quantizers are designed for successive cancellation (SC) decoding of polar codes based on either optimizing the equivalent channel capacity, cutoff rate or mean-squared...
In this paper, we employ distributed jointed source-channel (DJSC) coding based on quasi-cyclic low-density parity-check (QC-LDPC) codes in our wireless sensor network (WSN) for seismic exploration. In order to reduce the latency of jointed decoding, we propose a parallel structure of jointed decoding, and decoders of multiple sources can decode simultaneously. We make use of the soft information...
Spectrum sharing for cognitive two-way relaying is considered in this paper. A secondary relay is used to assist two-way communications between two primary users, and as a return, the secondary relay is allowed to transmit its own secondary signal by using some of the licensed primary spectrum. Three different spectrum sharing strategies are studied in this paper. In the baseline superposition coding...
In this paper, we propose a dirty paper coding (DPC) scheme for the cognitive radio channel where multiple cognitive users coexist with a primary user. The cognitive transmitter is assumed to know the primary signals non-causally and is equipped with two antennas, of which each transmits to a single-antenna receiver. In our proposal, zero-forcing DPC is employed to cancel the interference not only...
In this paper, we propose a dirty paper coding (DPC) scheme that uses trellis shaping for the overlay cognitive radio channel, where a cognitive user and a primary user transmit concurrently in the same spectrum. Interference of the primary user is assumed to be known at the cognitive transmitter non-causally. Based on this knowledge, the shaping code selection, as a key feature of the proposal, is...
The performance of smart grid applications such as advanced metering infrastructure (AMI) and demand response management (DRM) can be improved by exploiting wireless communication technologies. The communication data loading and data losses in smart grid impact the system. In this work, we propose the routing protocol which adopts the cooperative transmission architecture in smart grid communications...
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