Space Shift Keying Transmission for Intervehicular Communications

IEEE Wireless Communications Letters, 2015

We investigate the performance of multihop-intervehicular communication systems with regenerative and nonregenerative relaying. We consider the so-called "n*Rayleigh distribution" as an adequate multipath fading channel model for vehicle-to-vehicle communication scenarios. We derive a novel approximation for the outage probability of maximum ratio combining (MRC) diversity reception. In addition, we analyze the amount of fading and optimize the power allocation for the investigated scenario. Numerical results show that regenerative systems are more efficient than nonregenerative systems when the cascading order () is small; however, for large , our results demonstrate that the performance of both relaying techniques is rather similar.

IEEE access, 2024

This paper presents a comprehensive analytical study of the average bit error probability (ABEP) performance of multiple-input multiple output (MIMO) communication systems employing Space Shift Keying (SSK) modulation operating over a mixture of Rayleigh fading and impulsive noise channels modelled by the symmetric alpha-stable distribution. By considering three key receiver structures, namely the genie-aided (GA), minimum distance (MD) and maximum likelihood (ML) type of receivers various analytical ABEP performance evaluation results are presented. Firstly, a novel analytical approach for evaluating the ABEP of SSK-MIMO systems, for the ideal benchmark GA receiver which has a-priori knowledge of both channel and noise coefficients, is introduced. The proposed methodology yields exact expressions for the ABEP performance of multiple-input single output (MISO) systems with two transmit antennas. For the general case of MIMO systems which employ an arbitrary number of transmit and/or receive antennas, accurate approximations and tight upper performance bounds are derived and their ABEP performance is analyzed. An asymptotic ABEP analysis is also carried out from which the diversity and the coding gains are derived. Secondly, a general class of minimum distance (MD) receivers, namely the L pnorm receivers, is considered. An approximate analytical expression for the ABEP of the special case of L 2norm (matched filter) receivers, whose performance is optimal for the additive white Gaussian noise channel (AWGN), is derived. For the general case of L p -norm receivers, their ABEP performance is evaluated by means of Monte Carlo simulations, revealing that they significantly outperform the L 2 -norm receivers. Thirdly, by considering the maximum-likelihood (ML) receiver, since its implementation complexity turns out to be prohibitively high, simple, suboptimal receiver configurations structures of the ML receiver are instead proposed. Analytical evaluation results verified by complementary computer simulations have shown that their ABEP performance is asymptotically, i.e., at high signal-to-noise ratios (SNR), optimal. For the GA, suboptimal ML and L p -norm receiver structures, the impact of spatial correlation on their ABEP performance has also been analyzed and evaluated. The accuracy of the analytical approaches used in deriving the proposed receivers has been validated by equivalent numerical ABEP performance evaluation results accompanied by complementary Monte Carlo simulations. Alpha stable distribution, average bit error probability, space shift keying (SSK) modulation, spatial Poisson process, multiple-input-multiple-output (MIMO) systems, network interference. I. INTRODUCTION Spatial modulation (SM) has emerged as an efficient and low-complexity transmission scheme for multipleinput-multiple-output (MIMO) wireless communication systems [2]-[4]. The working principle of SM is to use both con-ventional phase or amplitude modulation techniques, such as phase shift keying (PSK) and quadrature amplitude modulation (QAM), as well as a unique antenna index, selected from the set of transmitting antennas, to convey information. At every given time slot, only one transmitting antenna is active

Wireless Communications and Mobile Computing, 2017

This paper deals with the modeling of nonstationary time-frequency (TF) dispersive multipath fading channels for vehicle-to-vehicle (V2V) communication systems. As a main contribution, the paper presents a novel geometry-based statistical channel model that facilitates the analysis of the nonstationarities of V2V fading channels arising at a small-scale level due to the time-varying nature of the propagation delays. This new geometrical channel model has been formulated following the principles of plane wave propagation (PWP) and assuming that the transmitted signal reaches the receiver antenna through double interactions with multiple interfering objects (IOs) randomly located in the propagation area. As a consequence of such interactions, the first-order statistics of the channel model’s envelope are shown to follow a worse-than-Rayleigh distribution; specifically, they follow a double-Rayleigh distribution. General expressions are derived for the envelope and phase distributions,...

2016

This paper analyzes the performance of space shift keying (SSK) modulation for a generic multipleinput multiple-output (MIMO) wireless system operating over generalized κ − μ fading channels. In particular, an expression of the pair wise error probability (PEP) is obtained. In addition, simple and general asymptotic expression for the PEP is given. The derived expression for the PEP is general, such that the PEP over various well-known fading channels can be derived as special cases, such as Nakagami-m and Nakagami-n (Rice) fading channels. Numerical results are provided, sustained by simulation results, which corroborate the exactness of the theoretical analysis. Key–Words: Amplify-and-forward, Quadrature spatial modulation, Spectral efficiency, MIMO.

2007 IEEE 65th Vehicular Technology Conference - VTC2007-Spring, 2007

Preliminary results on the use of the vehicle to vehicle MIMO channel in a rural highway environment are presented. This is looked at both in terms of the available spatial multiplexing through singular value decomposition and also angular distribution within the channel. Results indicate a strong predominant line of sight link in general while instances of scattering from other vehicles will cause changes in the Doppler spectrum as well as beamforming jitter.

International Journal of Antennas and Propagation, 2012

This paper presents the statistical properties of the vehicle-to-vehicle Nakagami-Hoyt (Nakagami-q) channel model under nonisotropic condition. The spatial time correlation function (STCF), the power spectral density (PSD), squared time autocorrelation function (SQCF), level crossing rate (LCR), and the average duration of Fade (ADF) of the Nakagami-Hoyt channel have been derived under the assumption that both the transmitter and receiver are nonstationary having nonomnidirectional antennas. A simulator that uses the inverse-fast-fourier-transform-(IFFT-) based computation method is designed for this model. The simulator and analytical results are compared.

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008

A three-dimensional reference model for wideband multiple-input multiple-output (MIMO) mobile-to-mobile (M-to-M) channels is reviewed. To validate the reference model, an experimental MIMO M-to-M channel-sounding campaign was conducted for M-to-M vehicular communication with vehicles travelling along expressways in a metropolitan area. The measured data is processed and the channel statistics obtained from the reference model and from the empirical measurements are compared. The close agreement between the analytically and empirically obtained channel statistics confirms the utility of the proposed reference model.

In this paper, a platform for measuring the impulse response of wireless multiple-input-multiple-output (MIMO) vehicle-to-vehicle (V2V) channels is presented. The platform is developed using Rice University Wireless Open-Access Research Platform (WARP) boards and utilized to perform an experimental study of V2V channels through conducting field measurements. A full characterization of MIMO-V2V channels is given via extracting the channel parameters from the acquired measurements. These parameters include the power-delay profile, the Doppler spectrum, and the MIMO transmit and receive correlation matrices of the channel. Numerical simulations are utilized to examine the effect of the channel parameters on the bit error rate (BER) performance of an orthogonal frequency division multiplexing (OFDM) based system. Index Terms—Multiple input multiple output, vehicle to vehicle channels, Wireless Open-Access Research Platform, orthogonal frequency division multiplexing.

Autonomy and intelligent transportation systems (ITS) have recently shown an increased interest in vehicle ad hoc networks (VANETs). Additionally, the impending 5G and 6G technologies will result in substantial advancements for VANETs. IEEE 802.11p summarizes specifications of physical (PHY) and medium access control (MAC) layers for VANETs. Existing analytical methodologies require improvement despite the fact that performance assessments of IEEE 802.11p MAC have been carried out. Bit error and channel capture influence performance of vehicular communications in real-world transmission. These effects are investigated separately in previous works. In this paper, an extensive study is provided which integrates these two major factors. In VANETs, the influence of channel fading and capture on IEEE 802.11p is investigated analytically using a Markov chain model. For Nakagami-m, Rayleigh, and Rician fading channels, performance impacting factors are taken into account, and relationships...

EURASIP Journal on Wireless Communications and Networking, 2009

Recommended by Ibrahim Develi Code Division Multiple Access (CDMA) and multiple input multiple output-(MIMO-) CDMA systems suffer from multiple access interference (MAI) which limits the spectral efficiency of these systems. By making these systems more power efficient, we can increase the overall spectral efficiency. This can be achieved through the use of improved modulation and coding techniques. Conventional MIMO-CDMA systems use fixed spreading code assignments. By strategically selecting the spreading codes as a function of the data to be transmitted, we can achieve coding gain and introduce additional degrees of freedom in the decision variables at the output of the matched filters. In this paper, we examine the bit error rate performance of parity bit-selected spreading and permutation spreading under different wireless channel conditions. A suboptimal detection technique based on maximum likelihood detection is proposed for these systems operating in frequency selective channels. Simulation results demonstrate that these code assignment techniques provide an improvement in performance in terms of bit error rate (BER) while providing increased spectral efficiency compared to the conventional system. Moreover, the proposed strategies are more robust to channel estimation errors as well as spatial correlation.