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This paper propose a method of suppressing inter-user interference in the in-band full duplex communication. In this method, an interference compress technique is used for eliminating the interference at the receiving terminal. Also, we evaluated the achievable transmission rate of the proposed method by using channel state information (CSI) measured by the outdoor field experiment.
The eigen-beamforming with the end-fire arrangement has been proposed as an interference suppression method suitable for multiple-input multiple-output (MIMO) full-duplex. We clarify the effectiveness of this scheme by experimentally evaluating the bit-error-rate (BER) performance of the uplink desired signal from the mobile terminal while the self-interference in the base station is suppressed. The...
In this paper, we introduce an interference suppression technique that combines a multiple-input multiple-output antenna arrangement with eigen-beamforming suitable for space division duplex relay that uses separate transmitter (Tx) and receiver (Rx) in relay stations (RSs) to realize full-duplex communication. The proposed technique degenerates the rank of the interference channel matrix to basically...
In this paper, we propose the new scheme, multi-user full-duplex MIMO (Multiple-Input and Multiple-Output) system, which performs uplink and downlink signal transmissions at the same frequency and time between the base station and multiple terminals. We show the characteristics of the transmission capacity of the proposed full duplex MIMO system by use of the channel information measured in an actual...
In this paper, we discuss the inter-array decoupling technique suitable for MIMO full-duplex, which uses a combination of the end-fire antenna arrangement and eigen-beamforming. An experimental evaluation clarifies that the end-fire antenna arrangement contributes to the reduction of the inter-array coupling by 18.7 dB compared with the facing antenna arrangement, and that the small antenna aperture...
In this paper, the self-interference reduction method suitable for the MIMO (Multiple-Input Multiple-Output) full-duplex repeater is presented. The combination of an eigen-beamforming and end-fire arrangement of linear Tx and Rx array significantly reduces the self-interference only at cost of a single degree-of-freedom. Moreover, the remaining self-interference is suppressed by using a digital subtraction...
This paper proposes a self-interference reduction method exploiting antenna arrangement and beamforming for space division duplex (SDD) relay station. When transmitting (Tx) and receiving (Rx) linear array antennas are placed in end-fire arrangement, spatial correlation between Tx and Rx increases. This causes rank degeneracy of the channel matrix between Tx and Rx. With this channel, almost all the...
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