A. O. Laiyemo, H. Pennanen, P. Pirinen and M. Latva-aho, "Transmission Strategies for Throughput Maximization in High-Speed-Train Communications: From Theoretical Study to Practical Algorithms," in IEEE Transactions on Vehicular Technology, vol. 66, no. 4, pp. 2997-3011, April 2017. doi: 10.1109/TVT.2016.2586118
Transmission strategies for throughput maximization in high speed train communications : from theoretical study to practical algorithms
|Author:||Laiyemo, Ayotunde1; Pennanen, Harri1; Pirinen, Pekka1;|
1Centre for Wireless Communications, University of Oulu, 90014 Oulu, Finland
|Online Access:||PDF Full Text (PDF, 1.1 MB)|
|Persistent link:|| http://urn.fi/urn:nbn:fi-fe2018070527071
Institute of Electrical and Electronics Engineers,
|Publish Date:|| 2018-07-05
This paper focuses on improving the downlink throughput of the base station (BS)-to-train communication link in a high-speed train (HST) scenario. First, we provide a theoretical study of the throughput maximization problem in a single-cell multiple-input-multiple-output orthogonal frequency-division multiplexing (MIMO-OFDM) train scenario with and without cooperation among carriages. The aim is to give fundamental insight into the problem rather than providing practically realizable algorithms. The theoretical study suggests that it is highly advantageous to exploit the size of the train by increasing the number of antennas and further allowing the carriages to cooperate. In the practical system-level study, we propose two low-complexity MIMO-OFDM transmission schemes, which are based on simple antenna selection (AS) methods with spatial multiplexing. The main idea is to select the best transmit antennas among different antenna combinations by comparing their estimated throughput performances. The simulation results show that the proposed algorithms outperform Long-Term Evolution (LTE)-based dynamic rank transmission schemes in terms of throughput and computational load in practical HST scenarios. Unlike the exhaustive search type of dynamic transmission schemes, our simple algorithms are also applicable to large antenna arrays. In conclusion, large antenna arrays with simple AS and spatial multiplexing transmission strategies seem to be potential solutions to the significant improvement of the throughput of the BS-to-train link in HST scenarios.
IEEE transactions on vehicular technology
|Pages:||2997 - 3011|
|Type of Publication:||
A1 Journal article – refereed
|Field of Science:||
213 Electronic, automation and communications engineering, electronics
This research was supported by the Finnish Funding Agency for Technology and Innovation (TEKES), Nokia Networks, Anite Telecoms, Huawei Technologies, Broadcom Communications Finland, and Elektrobit Wireless Communications.
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