TY - GEN
T1 - Frequency and Timing Synchronization for In-Band Full-Duplex OFDM System
AU - Shaboyan, Sergey
AU - Ahmed, Elsayed
AU - Behbahani, Alireza S.
AU - Younis, Waleed
AU - Eltawil, Ahmed M.
N1 - Generated from Scopus record by KAUST IRTS on 2019-11-20
PY - 2017/7/1
Y1 - 2017/7/1
N2 - This paper presents frequency and timing synchronization error compensation techniques for In-Band Full- Duplex (IBFD) communication systems that employ Orthogonal Frequency Division Multiplexing (OFDM). First, we describe a system model of a full-duplex base station receiving from a remote node, while transmitting to another node on the same frequency, and in same time slot. Synchronization issues between base station and remote node are analyzed. Impairments such as carrier frequency offset, sampling time offset, symbol timing offset are addressed considering both signal-of-interest and self-interferer components of the received composite signal. We then present the receive chain of the full-duplex OFDM system, and propose compensation techniques. The proposed receiver is simulated and overall performance degradation is measured to be within 0.3 to 0.7 dB of the ideal receiver, in various channel conditions. The proposed techniques are implemented and tested experimentally on a real time IBFD-OFDM system, using software defined radios. Overall performance degradation is measured to be within 0-1.5 dB as compared to a wired synchronized system, in indoor channel conditions.
AB - This paper presents frequency and timing synchronization error compensation techniques for In-Band Full- Duplex (IBFD) communication systems that employ Orthogonal Frequency Division Multiplexing (OFDM). First, we describe a system model of a full-duplex base station receiving from a remote node, while transmitting to another node on the same frequency, and in same time slot. Synchronization issues between base station and remote node are analyzed. Impairments such as carrier frequency offset, sampling time offset, symbol timing offset are addressed considering both signal-of-interest and self-interferer components of the received composite signal. We then present the receive chain of the full-duplex OFDM system, and propose compensation techniques. The proposed receiver is simulated and overall performance degradation is measured to be within 0.3 to 0.7 dB of the ideal receiver, in various channel conditions. The proposed techniques are implemented and tested experimentally on a real time IBFD-OFDM system, using software defined radios. Overall performance degradation is measured to be within 0-1.5 dB as compared to a wired synchronized system, in indoor channel conditions.
UR - https://ieeexplore.ieee.org/document/8254928/
UR - http://www.scopus.com/inward/record.url?scp=85046341677&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2017.8254928
DO - 10.1109/GLOCOM.2017.8254928
M3 - Conference contribution
SN - 9781509050192
BT - 2017 IEEE Global Communications Conference, GLOBECOM 2017 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
ER -