This paper presents the design and implementation of a high-speed wireless transmission modem on FPGA, tailored for Gbps-level high-resolution, large-volume data, such as UAV surveillance information. Our achieves enhanced performance reduced hardware complexity by partitioning complex LDPC blocks into smaller parallel units with short codes, setting it apart from conventional DVB-S2 systems. Experimental results validate rate 3.1 Gbps spectral efficiency bps/Hz, low loss 1.4 dB. meet data...

This paper presents a novel high-speed, low-complexity two-parallel 128-point radix-24 FFT/IFFT processor for MB-OFDM ultra-wideband (UWB) systems. The proposed FFT architecture can provide higher throughput rate and low hardware complexity by using data-path scheme single-path delay-feedback (SDF) structure. algorithm is also realized in our to reduce the number of complex multiplications. has been designed implemented with 0.18μm CMOS technology supply voltage 1.8V. up 900Msample/s at...

This paper presents a novel high-speed low-complexity pipelined degree-computationless modified Euclidean (pDCME) algorithm architecture for RS decoders. The pDCME allows elimination of the degree-computation so as to reduce hardware complexity and obtain processing. A decoder based on has been designed implemented with 0.13-μm CMOS standard cell technology in supply voltage 1.1V. proposed operates at clock frequency 660MHz throughput 5.3Gb/s. requires approximately 15% fewer gate counts...

Space-time block codes (STBCs) from coordinate interleaved orthogonal designs (CIODs) offer several advantages including full-diversity and single-symbol decodability. In an effort to assess their performance in quasi-static frequency nonselective i.i.d. Nakagami-m fading channels, we analyze the error rate, outage capacity, information probability. First, based on accurate closed-form formula for average symbol pairwise rate (SPER), derive tight union upper lower bounds symbol-error (SER)....

Quasi-orthogonal space time block codes with power scaling (QSTBC-PS) that linearly combines two Alamouti unequal has been known to achieve full diversity in multi-input multi-output (MIMO) systems. In this correspondence, we evaluate the physical layer security performance of QSTBC-PS MIMO wiretap channels under Rayleigh fading. We derive tight closed-form approximate formula secrecy outage probability for by using moment matching approximation technique. Further, high signal-to-noise ratio...

An efficient combined maximum likelihood (ML) and decision feedback equalization (DFE) decoding method is proposed for a coded double space-time block code orthogonal frequency division multiplexing (DSTBC-OFDM) system. For the missing bit log ratios (LLRs) in DFE part, our detector effectively exploits Gaussian approximated LLRs with reference to colored noise covariance matrix. Simulation results demonstrate that can achieve comparable performance full ML detectors deterministic lower complexity.

This paper presents a self-reconfigurable adaptive FIR filter system design using dynamic partial reconfiguration, which has flexibility, power efficiency, advantages of configuration time allowing dynamically inserting or removing modules. is responsible for providing the best solution realization and autonomous adaptation filters, processes optimal digital signal processing algorithms, are low-pass, band-pass high-pass algorithms with various frequencies, noise removal operations. The...

SUMMARY This paper investigates a design and performance of 4parallel MB-OFDM UWB receiver. The the proposed receiver using 4-parallel synchronization structure is degraded by 0.25 dB compared with that 1-parallel in maximum frequency/sampling clock offset tolerance an AWGN channel. Considering other impairments, including imperfect algorithms, effect quantization error negligible multi-path channel environment as well channel, identified simulation

In this correspondence, we evaluate the symbol error rate (SER) and information outage probability (IOP) of space-time block codes (STBCs) from coordinate interleaved orthogonal designs (CIODs) in composite channel lognormal shadowing Rayleigh fading. By applying Gauss-Hermite quadrature integration, derive an accurate closed-form approximation for pairwise (SPER) corresponding tight upper lower bounds on SER STBCs CIODs. An approximate formula IOP is also derived by formulating squared...

Network topology has no direct effect on the correctness of network protocols, however, it influences performance networks and their survivability when they are under attack. Recent studies have analyzed robustness Internet in face faults or attacks which may cause node failures. However, link failure a series failures not been extensively examined, even though such situation is more likely to occur current environment. In this paper, we propose an attack-and-failure graph model practical...

A novel quasi-orthogonal space-time block code (QSTBC) with full-diversity full-rate transmission and double-symbol decoding is proposed for a system four transmit antennas, which constructed by linearly combining two optimally power-scaled component Alamouti codes. Compared the existing QSTBC optimal constellation rotation, provides excellent robustness, in terms of bit error rate performance, against spatially correlated and/or time-selective fading channels.

This paper reports on a fiber-optic system for in-building wireless communication/broadcast systems developed in Samsung Electronics. Our delivers the third generation mobile system, satellite-digital multimedia broadcast, and local access network services over single strand of single-mode fiber or multi-mode fiber. We present design issue experimental results radio-over-fiber link.

In this Letter, the authors derive closed‐form formulas for generalised moment generating function of Fisher–Snedecor (F–S ) distribution, which enable us to effectively evaluate probability successful secure transmission over F–S composite fading channels. Extensive numerical results are presented validate accuracy their analytical framework.

In this letter, an efficient method of evaluating the performance space-time block codes (STBCs) from symmetrically structured coordinate interleaved orthogonal designs (CIODs) is presented over generalized-K MIMO fading channels. By effectively approximating moment generating function (MGF), we derive approximate closed-form expressions for symbol pairwise error rate (SPER) and corresponding tight (SER) STBCs symmetric CIODs. Finally, various Monte-Carlo simulations are performed to...

In this paper, a symbol error rate (SER) study is presented for the dual-hop relay networks employing space-time block code (STBC) from coordinate interleaved orthogonal design (STBC-CIOD), where with either decode-and-forward (DF) or an amplify-and-forward (AF) protocol equipped multiple antennas. More specifically, we provide union upper and lower bounds on average SER by deriving accurate closed-form formula corresponding pairwise (SPER). addition, asymptotic diversity order analyzed. The...

We analyze the effect of time-selective fading on information outage probability and diversity order Alamouti transmit with joint maximum likelihood, symbolwise linear zero forcing, decision feedback detectors. In contrast to existing bit error rate (BER) (BEO) analyses, we evaluate probabilities corresponding asymptotic orders for each detector. From theoretical simulation results, demonstrate that, when channel is time selective, four detectors approach two, zero, one, respectively.

In a recent paper, Mavridis et al. proposed statistical diffraction model to characterize the channel near human body (i.e., near-body zone) at 60 GHz in an indoor communication environment. Specifically, they demonstrated that zone has been separated into front and back regions, both regions can be theoretically modeled by two-wave with diffuse power (TWDP) distribution, properties of which are described two parameters <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Space-time block codes (STBCs) from coordinate interleaved orthogonal designs (CIODs) have attracted considerable attention lately due to their full-diversity and single-symbol decodability for multiple antenna systems. In this letter, we analyze the information outage probability of STBCs symmetric structured CIODs in quasi-static frequency-nonselective Rayleigh fading channels. By using density function (PDF) cumulative distribution (CDF) product two i.i.d. chi-square random variables then...

To effectively analyze the influence of two-wave with diffuse power (TWDP) fading on achievable error rate performance binary phase-shift keying (BPSK) signaling, we derive two novel concise asymptotic closed-form bit (BER) formulas. We perform analysese based existing exact and approximate BER formulas, which are obtained from probability density function (PDF) or moment generating (MGF), PDF TWDP fading. The derived expressions yield explicit insights into in environments. Furthermore,...

This correspondence considers the inverse Gaussian distribution, which is a tractable and accurate alternative to log-normal distribution that represents not only shadowing in wireless communications but also turbulence free-space optical communications. We first derive generalized moment generating function (G-MGF) of then make use derived formula effectively analyze several performance metrics, such as area under receiver operating characteristics (ROC) curve, average error rate, outage...

This paper studies physical layer security for Alamouti space–time block code (STBC) with joint maximum likelihood (JML) or zero forcing (ZF) detection techniques particularly over multi-input single-output (MISO) wiretap time-selective Rayleigh fading channels. Specifically, we derive the secrecy outage probabilities (SOPs) and their concise but effective approximations various combinations of JML ZF at legitimate receiver eavesdropper. We also investigate diversity gain by applying high...

In this paper, we propose QR-decomposition-based unordered/ordered decorrelating decision-feedback detection (D-DFD) schemes with linear or D-DFD symbol estimators for a double space-time transmit diversity (D-STTD) system. The time-selective fading mobile channel severely degrades the performance of conventional detectors, since time-selectivity destroys orthogonality codeword. Moreover, complexity known symbol-by-symbol detectors is too high to be implemented, due multiple inversions....

By combining transmit diversity and spatial mul- tiplexing schemes, a double space-time (D- STTD) system achieves both gain increased data rate. However, the performance degradation of D-STTD is caused by channel time-selectivity due to high Doppler spread effect in wireless mobile fading channels. To overcome this problem, we propose computationally efficient zero-forcing (ZF) detection scheme. The detector exploits two effective filtering processes with no matrix inversion. Therefore, it...