Details

Autor(en) / Beteiligte

• Hayakawa, Makoto
• Mochizuki, Takuji
• Hirabe, Masashi
• Kikuma, Tomohiro
• Nose, Daisuke

Titel

Effect of Nonlinear Distortion and Null Stability on Spatial-multiplexing Performance using 4.65-GHz-Band Active Antenna System with DPD

Ist Teil von

• 2019 49th European Microwave Conference (EuMC), 2019, p.1076-1079

Ort / Verlag

European Microwave Association (EuMA)

Erscheinungsjahr

2019

Quelle

IEEE

Beschreibungen/Notizen

• This paper describes the effect of nonlinear distortion and null stability on spatial-multiplexing performance using our developed 4.65-GHz-band active antenna system with digital-pre-distortion (DPD). Superior spatial-multiplexing performance over a wide dynamic range is achieved. Due to nonlinear distortion compensation with DPD in the high-power region, the downlink (DL) signal to interference plus noise ratio (SINR) even at 16-layer is improved by 6 dB, from 19 to 25 dB, at the maximum rated output. And thanks to high precision null formation by highly accurate successive calibration in the low-power region, at 16-layer multiplexing, an SINR of 28 dB is obtained.