This paper proposes a new type of fiber-optic relaying that extends the coverage of mobile networks. The antenna facing the evolved Node B (eNB) is geographically separated from the antenna facing the user equipment, and the two antennas are connected by an optical fiber. This paper presents a practical design method for fiber-optic inband relaying in the presence of self-interference, which is the interference between backhaul and access links. For two types of interference path loss models, the theoretical desired-to-undesired-signal ratio (DUR) in both uplink and downlink is investigated for a practical layout model as parameters of optical fiber length, and the distance between eNB and the antenna facing eNB. We also analyze the performance of both DUR and the signal-to-noise ratio versus carrier frequency.
['Tomoki Ota', 'Mitsutoshi Nakamura', 'Hiroyuki Otsuka']
Practical design method for fiber-optic inband relaying in the presence of self-interference