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Interference Rejection Characteristics by Adaptive Array at User Equipment Using Measured K-Factor in Heterogeneous Networks
Interference Rejection Characteristics by Adaptive Array at User Equipment Using Measured K-Factor in Heterogeneous Networks
Nishimori, Kentaro
5501
Kusumi, Keisuke
5502
Horio, Misaki
5503
Kitao, Koshiro
5504
Imai, Tetsuro
5505
heterogeneous networks
adaptive array
user equipment
K-Factor
zero forcing
In LTE-Advanced heterogeneous networks, a typical cell layout to enhance frequency utilization is to incorporate picocells and femtocells in a macrocell. However, the co-channel interference between the marcocell and picocell/femtocell is an important issue when the same frequency band is used between these systems. We have already clarified how the interference from the femto(macro) cell affects on the macro(femto) cell. In this paper, we evaluate the interference rejection characteristics by an adaptive array with user equipment (UE). The characteristics are evaluated based on the K-factor used in the Nakagami-Race Fading model and the spatial correlation that is obtained in an actual outdoor environment. It is shown that a two-element adaptive array at the macro UE (M-UE) can sufficiently reduce the interference from the femto base station (F-BS) to the M-UE even if the number of total signals exceeds the degrees of freedom of the array.
journal article
The Institute of Electronics, Information and Communication Engineers
2013-06
application/pdf
IEICE transactions on communications
6
E96-B
1256
1264
IEICE transactions on communications
AA10826261
09168516
https://niigata-u.repo.nii.ac.jp/record/1768/files/E96-B_6_1256-1264.pdf
eng
info:doi/10.1587/transcom.E96.B.1256
http://www.ieice.org/jpn/trans_online/
Copyright(C)2013 IEICE
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