Asynchronous Cooperative Relaying for Vehicle-to-Vehicle Communications

Sohaib, Sarmad; So, Daniel K. C.

doi:10.1109/tcomm.2013.031213.120008

Cited by 16 publications

(12 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Technologies that support cooperative communications have been studied extensively for VANETs and two of the most common protocols are Amplify-and-Forward (AF) and Decode-and-Forward (DF) [12]. Cooperative or polarization diversity is created by applying these protocols which exploit the broadcast nature of wireless channels and use relays to improve link reliability and throughput in a vehicular network [13]. In addition, the use of graph theory to formulate the problem of cooperative communications scheduling in vehicular networks is proposed in [14], in order to improve the throughput and spectral efficiency of the system concerned.…”

Section: Related Workmentioning

confidence: 99%

Adaptive cooperative communications for enhancing QoS in vehicular networks

Osman

Peng

Omar

2019

Physical Communication

View full text Add to dashboard Cite

In a vehicular network with high mobility, it is challenging to ensure reliable and efficient connections among vehicles and between vehicles and roadside communication units (or infrastructure) such as base stations or WiFi hot spots. In this paper, we propose a method that utilizes cooperative communications for a combined vehicle-to-infrastructure (V2I) with vehicle-to-vehicle (V2V) approach to improving quality of service (QoS) across the vehicular network. In this approach, we have obtained the closedform expressions of key QoS performances such as outage probability, throughput, energy efficiency, packet delivery ratio, packet loss rate and average end-to-end-delay for different investigated transmission schemes. These performances can be optimized by adaptively selecting appropriate transmission schemes and, as a results, good trade-offs between system reliability and efficiency can also be achieved under various environmental conditions.

show abstract

Section: Related Workmentioning

confidence: 99%

Adaptive cooperative communications for enhancing QoS in vehicular networks

Osman

Peng

Omar

2019

Physical Communication

View full text Add to dashboard Cite

show abstract

“…Channel capacity is defined as the mutual information of the channel maximized over all possible input distributions, which is usually one of the important indicators that fully describes the characteristics of the channel [37]. Since the channel capacity relates to the space-time correlation characteristics and non-uniform angular spread of scatterers.…”

Section: Ergodic Capacitymentioning

confidence: 99%

A Non-Stationary Geometry-Based Cooperative Scattering Channel Model for MIMO Vehicle-to-Vehicle Communication Systems

Qiu¹,

Xiao²

2019

KSII TIIS

View full text Add to dashboard Cite

Traditional channel models for vehicle-to-vehicle (V2V) communication usually assume fixed velocity in static scattering environment. In the realistic scenarios, however, time-variant velocity for V2V results in non-stationary statistical properties of wireless channels. Dynamic scatterers with random velocities and directions have been always utilized to depict the non-stationary statistical properties of the channel. In this paper, a non-stationary geometry-based cooperative scattering channel model is proposed for multiple-input multiple-output (MIMO) V2V communication systems, where a birth-death process is used to capture the appearance and disappearance dynamic properties of moving scatterers that reflect the time-variant time correlation and Doppler spectrum characteristics. Moreover, our model has more straight and concise to study the impact of the vehicular traffic density on channel characteristics and thus avoid complicated procedure in deriving the analytical expressions of the channel parameters and functions. The numerical results validate our analysis and demonstrate that setting important parameters of our model can appropriately build up more purposeful measurement campaigns in the future.

show abstract

“…Rate comparisons are made by simulations on DL3PSR, TPSR , conventional AF half‐duplex relaying, and AF full‐duplex relaying . We assume that all the protocols compared work with perfect CSI, that is, we only compare data rate without the effect of extra detection error.…”

Section: Simulationsmentioning

confidence: 99%

Three-path successive relaying protocol with blind inter-relay interference cancellation and cooperative non-coherent detection

Ren

Chen

Kuo

et al. 2016

Wirel. Commun. Mob. Comput.

View full text Add to dashboard Cite

Successive relaying has recently emerged as a spectral-efficient technique for cooperative wireless communications. However, in scenarios with uncertain accuracy of instantaneous channel state information (CSI), the scope of conventional two-path successive relaying protocol shrinks. This is due to the challenges of cancelling inter-relay interference (IRI) and detecting signals efficiently without specific CSI. The two challenges motivate us to propose a novel double listening 3-path successive relaying (DL3PSR) protocol to mitigate the successive relaying's dependence on accurate instantaneous CSI. We overcome the first challenge by proposing a blind IRI cancellation technique, and its effectiveness is proven. After blind IRI cancellation, the challenge of efficient signal detection is overcome by robust cooperative non-coherent detection, which consists of exclusive OR (XOR) demodulation and joint decoding. Based on constellation mapping, XOR demodulation is designed to demodulate M-ary phase-shift keying symbols without instantaneous CSI. Moreover, joint forward and backward decoding strategy is proposed to improve the robustness of data detection by retrieving two independent versions of the original data. Furthermore, the detection threshold, bit error probability, and achievable rate of DL3PSR are theoretically obtained. Simulations verify that in scenarios without full knowledge of CSI, DL3PSR protocol outperforms conventional two-path successive relaying in bit error performance and that the rate of DL3PSR is close to that of the full-duplex relaying.

show abstract

Asynchronous Cooperative Relaying for Vehicle-to-Vehicle Communications

Cited by 16 publications

References 17 publications

Adaptive cooperative communications for enhancing QoS in vehicular networks

Adaptive cooperative communications for enhancing QoS in vehicular networks

A Non-Stationary Geometry-Based Cooperative Scattering Channel Model for MIMO Vehicle-to-Vehicle Communication Systems

Three-path successive relaying protocol with blind inter-relay interference cancellation and cooperative non-coherent detection

Contact Info

Product

Resources

About