Name
Title | ||
|---|---|---|
Robust Scheduling and Resource Allocation in the Downlink of Spatially Correlated MIMO-OFDMA Wireless Systems with Imperfect CSIT |
Abstract | ||
|---|---|---|
MIMO-OFDMA has been selected as the core physical layer access scheme for the downlink of state-of-the-art and next-generation wireless communications standards. In these systems, scheduling and resource allocation algorithms, jointly assigning transmission data rates, bandwidth and power, become crucial to optimize the resource utilization while providing support to multimedia applications with heterogeneous quality of service (QoS) requirements. To this end, the transmitter is assumed to have channel state information (CSIT) that will typically be imperfect. This paper introduces a unified analytical framework for robust channel- and queue-aware QoS-guaranteed cross-layer scheduling and resource allocation algorithms for the downlink of MIMO-OFDMA networks with imperfect CSIT. The framework is based on the statistical characterization of the SNR under imperfect CSIT, and is general enough to encompass spatial correlation effects in the Tx and Rx antenna arrays, different types of traffic, uniform and continuous power allocation, discrete and continuous rate allocation, and protocols with different amounts of channel- and queue-awareness. Simulation results using parameters drawn from the 3GPP-LTE standard demonstrate the validity and merits of the proposed robust crosslayer unified approach. |
Year | DOI | Venue |
|---|---|---|
2016 | 10.1109/TVT.2015.2402515 | Vehicular Technology, IEEE Transactions |
Keywords | Field | DocType |
mimo-ofdma,resource allocation,spatial channel correlation | Scheduling (computing),Computer science,MIMO,Orthogonal frequency-division multiple access,Computer network,Electronic engineering,Resource allocation,Frequency-division multiple access,Orthogonal frequency-division multiplexing,Telecommunications link,Channel state information | Journal |
Volume | Issue | ISSN |
PP | 99 | 0018-9545 |
Citations | PageRank | References |
5 | 0.41 | 25 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Guillem Femenias | 1 | 354 | 45.43 |
| Felip Riera-Palou | 2 | 211 | 31.02 |
| J. Thompson | 3 | 3922 | 267.43 |