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The conventional deenitions of the source coding rate and of channel capacity require the existence of reliable codes for all suuciently large blocklengths. Alternatively, if it is required that good codes exist for innnitely many blocklengths, then optimistic deenitions of source coding rate and channel capacity are obtained. In this work, formulas for the(More)
—In this letter, we consider a concatenated BCH and QC-LDPC coding system for potential use of data protection on flash memory. Two issues are studied, and strategies to resolve them are proposed. First, in order to guarantee that the concatenated coding system is free from undesired error floor, we propose a strategy to select the outer BCH codes according(More)
—Fault-tolerance and data fusion have been considered as two fundamental functions in wireless sensor networks. In this paper, we propose a novel approach for distributed multiclass classification using a fault-tolerant fusion rule for wireless sensor networks. Binary decisions from local sensors, possibly in the presence of faults, are forwarded to the(More)
— The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied for uniformly distributed network nodes. By assuming the existence of forwarding neighbors and the knowledge of their locations, the average per-hop packet progress for a transmission range that is universal for all nodes is derived. This progress(More)
— The transmission range that achieves the most economical use of energy in wireless ad hoc networks is studied under homogeneous node distribution. By assuming the knowledge of node location, we first proposed a transmission strategy to ensure the progress of data packets toward their final destinations. Then the average packet progress for a transmission(More)
—Distributed classification fusion using error-correcting codes (DCFECC) has recently been proposed for wireless sensor networks operating in a harsh environment. It has been shown to have a considerably better capability against unexpected sensor faults than the optimal likelihood fusion. In this paper, we analyze the performance of a DCFECC code with(More)
—The coding technique that combines channel estimation and error correction has received attention recently, and has been regarded as a promising approach to counter the effects of multipath fading. It has been shown by simulation that a proper code design that jointly considers channel estimation can improve the system performance subject to a fixed code(More)