IEEE Communications Letters

A quantum cryptosystem based on algebraic codes, which uses single photons as quantum message carriers, is given. The cryptosystem is equipped with authentication, data integrity, and non-repudiation. There is no need for a parallel classical channel since public conversation is omitted. Indeed by using a suitable algebraic error-correcting code, Alice and Bob do not need to share a string of comm... View full abstract»

In this letter, we investigate feedback in expanding window BATS (EW-BATS) code. A single intermediate message is fed back to inform the more important packets have been decoded completely. The asymptotic decoding probabilities of various types of input packets with the proposed feedback expanding window BATS (FEW-BATS) code is analyzed via And-Or tree evaluation, we also optimized the degree dist... View full abstract»

In this letter, we design a low-latency, low-complexity, and low-transmission power analog linear coding scheme to estimate the finite-length data blocks under a mean-square-error (distortion) criterion. The proposed scheme is based on the analog linear coding and the discrete Fourier transform. A remarkable feature of our scheme is that it does not require knowing the correlation matrix of the da... View full abstract»

In this letter, we discuss the construction of all constacyclic codes over$R = \mathbb {Z}_{4}[v]/\langle v^{2}-v \rangle $. Some significant properties of linear codes over$R$have been explored. The self-dual constacyclic codes for odd length over View full abstract»

The choice of the interleaver may significantly affect the performance of short codes when they are used in serial concatenation. By focusing on the minimum distance of the overall concatenated code, we propose an algorithmic method for the design of good interleavers. As a valuable example of application, we consider the case of polar codes concatenated with cyclic redundancy check codes. For the... View full abstract»

Networked multi-agent dynamic system (NMDS) exhibits emergent swarming behavior by using local control laws based on spatial information from the nearby environment and adjacent agents. One of the challenges in NMDS is the lack of appropriate methods for operators to interact with a large group of agents. Studies on human–agent interaction have mainly focused on the direct influence on the behavio... View full abstract»

Multi-path and single-path transport mechanisms with explicit congestion notification (ECN) have been proposed to share the commodity data center networks’ (DCNs) fabric recently. The basic idea is that the throughput-sensitive long flows use explicit multipath (XMP) while the latency-sensitive short flows use data center TCP (DCTCP) to transfer data. However, the co-existence of DCTCP flows and X... View full abstract»

Load-modulated arrays (LMA) use a single central power amplifier (CPA) and tune (modulate) the antenna loads according to the information signal, eliminating the need for traditional RF chains (consisting of DACs, mixers, and filters) at the transmitter. We consider LMAs in multiuser communication on the downlink. A base station is equipped with an LMA to transmit data to multiple users. Toward de... View full abstract»

LoRa has been demonstrated as a front runner when it comes to evolving low-power wide area networks. At its core is LoRa modulation which depicts a patented chirp spread-spectrum modulation technique that supports energy-efficient and reliable long-range communication. The underlying bit error rate (BER) performance of LoRa modulation has not been yet rigorously analyzed in the literature. In this... View full abstract»

The molecular communication via diffusion (MCvD) is one of the most promising techniques for nano-networks due to its advantages of bio-compatibility and energy efficiency. Due to the diffusion nature of the molecules, the peak time of the channel impulse response (CIR) is relatively large. To avoid severe inter-symbol-interference effect, the symbol interval is usually set larger than the peak ti... View full abstract»

In this letter, we propose an effective constellation design method for visible light communication with signal-dependent shot noise (SDSN) in a two-dimensional (2-D) signal space. Two orthonormal basis functions are selected to construct the largest signal space. As the transmitted signals are distorted by SDSN, the improved constellation is obtained through minimizing the maximal symbol error ra... View full abstract»

In this letter, a modulation technique referred to as color-and-intensity shift keying (CISK) is proposed for visible light communication systems. The new scheme amalgamates conventional color shift keying (CSK) and non-zero-level unipolar pulse amplitude modulation (NZL-UPAM) for efficiently exploiting the degrees of freedom in both the color and the intensity domains. Specifically, it relaxes th... View full abstract»

This letter proposes time sharing (TS)-based half/full-duplex (HD/FD) cooperative non-orthogonal multiple access (CRNOMA) schemes, namely, TS-HD-CRNOMA and TS-FD-CRNOMA to efficiently utilize the spectrum of unpaired users. A scenario with more cell edge users (CEUs) than cell center users is considered. Both schemes pair a CCU with multiple clustered CEUs in a TS fashion via a relay, thereby effi... View full abstract»

In Release 13 of the 3rd Generation Partnership Project standard, the deployment of long-term evolution (LTE)/ LTE-advanced to the unlicensed spectrum called licensed-assisted access (LAA) was introduced to satisfy the high demand of traffic data with a new type of services mostly multimedia streams. The unlicensed spectrum is a shared resource between different radio access terminals such as Wi-F... View full abstract»

In this letter, we design and demonstrate a single-fiber and same-wavelength (SFSW) time transfer over branching fiber-optic networks with a synchronous time-division multiple access. After pre-synchronization, the transmission collisions among multiple nodes over an SFSW link in branching fiber-optic networks are avoided in the time domain. The two-way time transfer between a master node and mult... View full abstract»

Space division multiplexing is a promising solution, which has been proposed for elastic optical networks to deal with the anticipated exhaustion of the capacity of single core networks. This letter introduces the PERFECTA algorithm, a novel algorithm to provide failure-independent path protecting p-cycle for path protection in elastic optical networks using modulation and space division multiplex... View full abstract»

Underwater optical/acoustic hybrid sensor networks (UOASNs) play a crucial role in the tradeoffs among transmission rate, communication range, and bandwidth. The reasonable deployment of surface gateways, such as proper number and well-distributed locations, significantly decreases the error probability and propagation delay during transmission. In this letter, an adaptive and energy-efficient sch... View full abstract»

To support the increasing demand for the mobile broadband service by a massive number of users, the 5G communication standard facilitates the convergence of wireless access networks with backhauling supported by the passive optical network. A key challenge of this type of converged network architecture is the distribution of bandwidth or data rate from the central office to the different mobile op... View full abstract»

Optical dense wavelength division multiplexing (DWDM) can provide multiple Tbit/s throughput in the future geostationary satellite communications. In this letter, the proof-of-concept demonstration of this technology under worst case atmospheric channel conditions for satellite communications in geostationary orbit is presented. The highest-to-date throughput of 1.72 Tbit/s was transmitted over 10... View full abstract»

The problem of closed-form parameter estimation using a diversely polarized antenna array of arbitrary configurations is considered, under the coexistence of the circular and strictly noncircular signals used in the communication/radar systems. By incorporating the noncircularity difference and polarization diversity of the signals with the augmented polarimetric manifold decoupling, the conventio... View full abstract»

Instead of merely improving the spectral efficiency, improving the energy efficiency (EE) is another important concern for multibeam satellite systems, due to the power constraint of satellites. However, so far there has been no detailed work on the precoding design concerning the EE for multibeam satellite. In this letter, the EE maximization problem is investigated for multibeam satellite system... View full abstract»

Due to low complexity, received signal strength source localization in wireless sensor network has gained upsurge of interests in recent years. In this letter, we consider the path loss exponent (PLE) as a random variable in the lognormal shadowing model. Assuming a general distribution function for the PLE, the nonlinear equation for finding the maximum likelihood (ML) distance estimator has been... View full abstract»

The presence of a keyhole can severely degrade the signal identification performance of the multiple input multiple output (MIMO) system. In this letter, a novel algorithm, namely, the direct modulation recognition (DMR) algorithm is presented to classify the lower order PSK constellations under the spatially correlated MIMO keyhole and Rayleigh channels. In the proposed algorithm, the ratios of h... View full abstract»