A Multi-Stream Pricing-Based Precoding and Power Control Algorithm for Dynamic TDD Networks

Guimaraes, F. R. V. (author)

Fodor, Gabor, 1964- (author): KTH,Reglerteknik,Ericsson Research, Stockholm, Sweden

Freitas, W. C. (author)

Silva, Y. C. B. (author)

(creator_code:org_t)

Institute of Electrical and Electronics Engineers (IEEE), 2019
2019
English.
In: 2019 IEEE Conference on Standards for Communications and Networking, CSCN 2019. - : Institute of Electrical and Electronics Engineers (IEEE). - 9781728108643

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; show less...

Abstract Subject headings

Dynamic time division duplexing (DTDD) cellular networks enable to adapt the number of uplink and downlink time slots to the prevailing traffic demands in each cell at the expense of base station (BS)-to-BS and user equipment (UE)-to-UE interference. Recognizing the importance of mitigating the effect of these additional interference types, previous works proposed multicell coordinated beamforming to realize the full potential of DTDD systems that employ multiple antennas at the BSs. Unfortunately, the previously proposed mechanisms suffer from slow convergence, which renders such schemes impractical in fast fading and highly mobile environments. In this paper, we formulate the multicell multi-stream DTDD beamforming problem as an optimization task, and propose a near-optimal pricing-based algorithm to determine the beam directions and transmit power levels for each stream at the BSs. The proposed distributed precoding and power control algorithm not only improves the downlink performance, but it also substantially mitigates the BS-to-BS interference levels, and thereby improves the uplink performance as well. Simulation results indicate that the proposed algorithm exhibits faster convergence than previously proposed near-optimal schemes at the expense of some small performance degradation in terms of the achieved signal-to-interference-plus-noise-ratio (SINR).

TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)

By the author/editor: Guimaraes, F. R. ...; Fodor, Gabor, 19 ...; Freitas, W. C.; Silva, Y. C. B.

About the subject

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Control Engineer ...

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