Joint Power and Resource Allocation for Block-Fading Relay-Assisted Broadcast Channels

@article{Shaqfeh2011JointPA,
  title={Joint Power and Resource Allocation for Block-Fading Relay-Assisted Broadcast Channels},
  author={Mohammad Shaqfeh and Hussein M. Alnuweiri},
  journal={IEEE Transactions on Wireless Communications},
  year={2011},
  volume={10},
  pages={1904-1913}
}
We provide the solution for optimizing the power and resource allocation over block-fading relay-assisted broadcast channels in order to maximize the long term average achievable rates region of the users. The problem formulation assumes regenerative (repetition coding) decode-and-forward (DF) relaying strategy, long-term average total transmitted power constraint, orthogonal multiplexing of the users messages within the channel blocks, possibility to use a direct transmission (DT) mode from… 
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References

SHOWING 1-10 OF 49 REFERENCES
Power and Resource Allocation for Orthogonal Multiple Access Relay Systems
TLDR
The numerical results show that the joint allocation of power and the channel resource achieves significantly larger achievable rate regions than those achieved by power allocation alone with fixed channel resource allocation.
Opportunistic cooperation by dynamic resource allocation
TLDR
This work considers a Rayleigh fading wireless relay channel where communication is constrained by delay and average power limitations, and introduces opportunistic decode-and-forward (ODF) protocol which utilizes the relay depending on the channel state.
Resource Allocation for Wireless Fading Relay Channels: Max-Min Solution
TLDR
Capacities are established for fading relay channels that satisfy certain conditions and lower and upper bounds on the capacity are derived, and are shown to match, and thus establish the capacity for the parallel relay channel with degraded subchannels.
Capacity bounds and power allocation for wireless relay channels
TLDR
Compared to the direct transmission and traditional multihop protocols, the results reveal that optimum relay channel signaling can significantly outperform multihip protocols, and that power allocation has a significant impact on the performance.
A Unified Approach to QoS-Guaranteed Scheduling for Channel-Adaptive Wireless Networks
TLDR
A unified framework for channel-aware QoS-guaranteed scheduling protocols for use in adaptive wireless networks whereby multiple terminals are linked through orthogonal fading channels to an access point, and transmissions are (opportunistically) adjusted to the intended channel.
Throughput-Guaranteed Resource-Allocation Algorithms for Relay-Aided Cellular OFDMA System
TLDR
Resource-allocation schemes are proposed for the cases of one relay station (RS) and multiple RSs in the cell and the idea of adaptive RS activation is introduced, where the frame structure is adapted depending on the active RS.
Capacity and optimal resource allocation for fading broadcast channels - Part I: Ergodic capacity
TLDR
This paper derives the outage capacity regions of fading broadcast channels, assuming that both the transmitter and the receivers have perfect channel side information, and finds a strategy which bounds the outage probability region for different spectrum-sharing techniques.
Cooperative strategies and capacity theorems for relay networks
TLDR
The capacity results generalize broadly, including to multiantenna transmission with Rayleigh fading, single-bounce fading, certain quasi-static fading problems, cases where partial channel knowledge is available at the transmitters, and cases where local user cooperation is permitted.
Gaussian orthogonal relay channels: optimal resource allocation and capacity
TLDR
A Gaussian orthogonal relay model is investigated, and it is shown that when the relay-to-destination signal- to-noise ratio (SNR) is less than a certain threshold, the capacity at the optimizing /spl theta/ is also the maximum capacity of the channel over all possible resource allocation parameters.
Cooperative diversity in wireless networks: Efficient protocols and outage behavior
TLDR
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.
...
1
2
3
4
5
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