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Spectrum sharing via HARQ feedback and adaptive power allocation

Behrooz Makki (Institutionen för signaler och system, Kommunikationssystem) ; Thomas Eriksson (Institutionen för signaler och system, Kommunikationssystem) ; Tommy Svensson (Institutionen för signaler och system, Kommunikationssystem)
2014 IEEE Wireless Communications and Networking Conference, WCNC 2014; Istanbul; Turkey; 6 April 2014 through 9 April 2014 (1525-3511). p. 1024-1029. (2014)
[Konferensbidrag, refereegranskat]

Recently, substantial attention has been paid to improve the spectral efficiency of communication setups using different spectrum sharing techniques. This paper studies the throughput of spectrum sharing channels utilizing hybrid automatic repeat request (HARQ) protocols. Considering different HARQ schemes, the unlicensed user throughput is obtained under an outage probability constraint for the licensed user. The outage-limited throughput is obtained for both independent and spatially-correlated fading conditions, where there is spatial dependency between the fading coefficients. The results show that, using HARQ and adaptive power allocation, the maximum throughput is achieved by combination of simultaneous transmission and interference-avoiding spectrum sharing paradigms. The performance of the spectrum sharing networks is not sensitive to spatial correlation, within the practical range, and the throughput changes are negligible at low/moderate correlations. Finally, there is considerable potential for data transmission of the unlicensed user with limited performance degradation of the licensed user.

Article number 6952249

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Denna post skapades 2014-01-15. Senast ändrad 2016-02-01.
CPL Pubid: 192546


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Institutionen för signaler och system, Kommunikationssystem (1900-2017)


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Chalmers infrastruktur