Optimal Beamformer Design for Dual-Hop MIMO AF Relay Networks over Rayleigh Fading Channels

Li, Min; Lin, Min; Yu, Quan; Zhu, Wei-Ping; Liang, Dong

doi:10.1109/jsac.2012.120910

Cited by 50 publications

(37 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, to achieve higher system capacity and energy efficiency, multiantenna technique was investigated in [20][21][22], and HTS with Ka/Q/V-band frequency with multiple antennas have attracted significant attention [23]. Authors in [24][25][26][27][28][29][30][31] investigate the performance of relay-based multiple antenna HSTC/RNs, since relay transmissions can effectively improve the throughput and the coverage of satellite communications.…”

Section: Background and Motivationmentioning

confidence: 99%

Performance Analysis of Space Information Networks with Backbone Satellite Relaying for Vehicular Networks

Jiao

Gao

et al. 2017

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

Space Information Network (SIN) with backbone satellites relaying for vehicular network (VN) communications is regarded as an effective strategy to provide diverse vehicular services in a seamless, efficient, and cost-effective manner in rural areas and highways. In this paper, we investigate the performance of SIN return channel cooperative communications via an amplify-andforward (AF) backbone satellite relaying for VN communications, where we assume that both of the source-destination and relaydestination links undergo Shadowed-Rician fading and the source-relay link follows Rician fading, respectively. In this SIN-assisted VN communication scenario, we first obtain the approximate statistical distributions of the equivalent end-to-end signal-to-noise ratio (SNR) of the system. Then, we derive the closed-form expressions to efficiently evaluate the average symbol error rate (ASER) of the system. Furthermore, the ASER expressions are taking into account the effect of satellite perturbation of the backbone relaying satellite, which reveal the accumulated error of the antenna pointing error. Finally, simulation results are provided to verify the accuracy of our theoretical analysis and show the impact of various parameters on the system performance.

show abstract

Section: Background and Motivationmentioning

confidence: 99%

Performance Analysis of Space Information Networks with Backbone Satellite Relaying for Vehicular Networks

Jiao

Gao

et al. 2017

Wireless Communications and Mobile Computing

View full text Add to dashboard Cite

show abstract

“…Based on the design criterion of maximizing the mutual information, which is an important measure for the performance in wireless communications defined as [14] C ¼…”

Section: System Descriptionmentioning

confidence: 99%

“…Furthermore, Jiang and Swindlehurst [13] have considered an AF relay system with a multi-antenna UAV and a collection of single-antenna ground nodes, and developed an algorithm to maximize the approximate ergodic capacity (EC) of the ground-to-relay link. While the aforementioned literatures, such as [12] and [13], have significantly improved our understanding on the transmission schemes and the performance of the UAVassisted relay wireless networks, they have only studied the single-hop link between the multi-antenna UAV and the ground nodes, which is not an actual model due to the fact that signal transmissions between two nodes through a relay should be modeled as a dual-hop link [14], [15]. This observation motivates the work presented in this paper.…”

Section: Introductionmentioning

confidence: 99%

Optimal Beamforming and Performance Analysis of Wireless Relay Networks with Unmanned Aerial Vehicle

Ouyang

Lin²

2015

Frequenz

Self Cite

View full text Add to dashboard Cite

In this paper, we investigate a wireless communication system employing a multi-antenna unmanned aerial vehicle (UAV) as the relay to improve the connectivity between the base station (BS) and the receive node (RN), where the BS-UAV link undergoes the correlated Rician fading while the UAV-RN link follows the correlated Rayleigh fading with large scale path loss. By assuming that the amplify-and-forward (AF) protocol is adopted at UAV, we first propose an optimal beamforming (BF) scheme to maximize the mutual information of the UAV-assisted dual-hop relay network, by calculating the BF weight vectors and the power allocation coefficient. Then, we derive the analytical expressions for the outage probability (OP) and the ergodic capacity (EC) of the relay network to evaluate the system performance conveniently. Finally, computer simulation results are provided to demonstrate the validity and efficiency of the proposed scheme as well as the performance analysis.

show abstract

“…Although a lot of multi-antenna relay schemes, including beamforming (BF) [13][14][15], joint precoding and limited feedback [16], antenna selection [17], and spatial multiplexing technology [18] have been proposed by far, BF is considered as a more practical strategy [14]. When the channel state information (CSI) is available, it has been found that the optimal BF based on maximizing the output SNR is equivalent to implement the maximalratio-transmission (MRT) and the maximal-ration-combining (MRC) at the source and destination, respectively [14,15]. Besides, it is also widely recognized that performance analysis has been an important and active research topic in wireless communications and radar, since it can provide useful guidance for the engineers for the purpose of system design in practice.…”

Section: Introductionmentioning

confidence: 99%

“…Until now, the performances of AF relay networks with optimal BF have been well investigated in a rich body of the related papers. For example, the outage probability (OP), probability density function (PDF), and average symbol error rate (ASER) of multi-antenna relaying over Rayleigh fading channels have been derived in [13,15,19]. Besides the most extensively studied Rayleigh fading distributions, the application of BF in AF relay systems and its performance analysis have also been presented in Nakagami-m fading environments [20].…”

Section: Introductionmentioning

confidence: 99%

Effect of Beamforming on Multi-Antenna Two Hop Asymmetric Fading Channels With Fixed Gain Relays

Lin¹,

An²,

Ouyang³

et al. 2013

PIER

Self Cite

View full text Add to dashboard Cite

Abstract-In this paper, we investigate the impact of beamforming (BF) on a multi-antenna two hop amplify-and-forward (AF) fixed gain relay network over Rician-Rayleigh and Rayleigh-Rician asymmetric fading channels, respectively. The network consists of a relay with single antenna used to assist the signal transmission from the source to the destination, both of which are equipped with multiple antennas. By using the channel state information (CSI), the maximal output signal-to-noise ratio (SNR) with optimal beamforming is first obtained. Then, the novel analytical expressions for the outage probability (OP), probability density function (PDF) and generalized moments of the maximal output SNR are derived. Moreover, the theoretical formulas of the Ergodic capacity and average symbol error rates (ASERs) with various modulation formats are also developed. To gain further insights, the asymptotic ASERs at high SNR are presented to reveal the diversity order and array gain of the multi-antenna relay network. Finally, computer simulations confirm the validity of the theoretical analysis and indicate the influence of antenna number and Rican factor on the system performance.

show abstract

Optimal Beamformer Design for Dual-Hop MIMO AF Relay Networks over Rayleigh Fading Channels

Cited by 50 publications

References 23 publications

Performance Analysis of Space Information Networks with Backbone Satellite Relaying for Vehicular Networks

Performance Analysis of Space Information Networks with Backbone Satellite Relaying for Vehicular Networks

Optimal Beamforming and Performance Analysis of Wireless Relay Networks with Unmanned Aerial Vehicle

Effect of Beamforming on Multi-Antenna Two Hop Asymmetric Fading Channels With Fixed Gain Relays

Contact Info

Product

Resources

About