Proceedings Article10.1109/ICUFN.2012.6261677
Lagrange multiplier based power minimization algorithm with relay selection in cooperative system
Jianlan Jia,Zhiquan Bai,Xianglai Yang,Juan Cui,Kyung Sup Kwak +4 more
- 04 Jul 2012
- pp 123-127
3
TL;DR: Simulation results show that the total power consumption of the proposed scheme is significantly reduced compared with that of the direct transmission and the best relay scheme in opportunistic relay selection (ORS).
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Abstract: In this paper, we propose a power allocation scheme to minimize the total power consumption in a decode-and-forward (DF) multi-relay cooperative system considering the required data rate. Based on the minimal transmit power of the source and the instantaneous channel state information (CSI) between the source and the relays, the optimal relays will be selected to reduce the total system power consumption. With the application of Lagrange multiplier technique together with relay selection, the power minimization problem can be solved. Simulation results show that the total power consumption of the proposed scheme is significantly reduced compared with that of the direct transmission and the best relay scheme in opportunistic relay selection (ORS).
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Citations
A new fuzzy based joint DF relay selection and link adaptation
Mehrdad Taki,Yasaman Omid +1 more
- 09 Apr 2015
TL;DR: A new scheme is proposed for optimum selection of decode and forward (DF) relay jointly with link adaptation using adaptive modulation, coding and transmit power, based on fuzzy logic.
4
New transmission scheme to enhance throughput of DF relay network using rate and power adaptation
Mehrdad Taki,Milad Heshmati +1 more
TL;DR: A considerable outperformance is seen by continuous power adaptation compared to the case where constant powers are utilised, and a new throughput maximised transmission scheme is developed using discrete rate adaptation (adaptive modulation and coding) and continuous transmission power adaptation.
3
User-relay assignment for amplify-and-forward cooperative communication systems
Yingyan Su,Zhiquan Bai,Shanshan Peng,Shangqian Sun,Tao Han,Kyung Sup Kwak +5 more
- 01 Sep 2016
TL;DR: A suboptimal low complexity user-relay assignment algorithm which can also optimize the achievable system average sum rate and improve the system outage probability.
1
References
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
TL;DR: Using distributed antennas, this work develops and analyzes low-complexity cooperative diversity protocols that combat fading induced by multipath propagation in wireless networks and develops performance characterizations in terms of outage events and associated outage probabilities, which measure robustness of the transmissions to fading.
13.5K
User cooperation diversity. Part I. System description
TL;DR: Results show that, even though the interuser channel is noisy, cooperation leads not only to an increase in capacity for both users but also to a more robust system, where users' achievable rates are less susceptible to channel variations.
6.8K
Distributed space-time-coded protocols for exploiting cooperative diversity in wireless networks
J.N. Laneman,Gregory W. Wornell +1 more
TL;DR: This work develops and analyzes space-time coded cooperative diversity protocols for combating multipath fading across multiple protocol layers in a wireless network and demonstrates that these protocols achieve full spatial diversity in the number of cooperating terminals, not just theNumber of decoding relays, and can be used effectively for higher spectral efficiencies than repetition-based schemes.
A simple Cooperative diversity method based on network path selection
TL;DR: A novel scheme that first selects the best relay from a set of M available relays and then uses this "best" relay for cooperation between the source and the destination and achieves the same diversity-multiplexing tradeoff as achieved by more complex protocols.