Full-Duplex MIMO Small-Cell Networks With Interference Cancellation

Abstract

Full-duplex (FD) technology is envisaged as a key component for future mobile broadband networks due to its ability to boost the spectral efficiency. FD systems can transmit and receive simultaneously on the same frequency at the expense of residual self-interference (SI) and additional interference to the network compared with half-duplex (HD) transmission. This paper analyzes the performance of wireless networks with FD multi-antenna base stations (BSs) and HD user equipments (UEs) using stochastic geometry. Our analytical results quantify the success probability and the achievable spectral efficiency and indicate the amount of SI cancellation needed for beneficial FD operation. The advantages of multi-antenna BSs/UEs are shown and the performance gains achieved by balancing desired signal power increase and interference cancellation are derived. The proposed framework aims at shedding light on the system-level gains of FD mode with respect to HD mode in terms of network throughput, and provides design guidelines for the practical implementation of FD technology in large small-cell networks.

Full-Duplex Heterogeneous Networks With Decoupled User Association: Rate Analysis and Traffic Scheduling

“…Most importantly, they characterize the downlink and uplink void BSs that do not generate interferences so that they reveal how different cell loads induced by different user association schemes affect the link rate. To the best of our knowledge, (24) and (26) are the most general and accurate expressions with moderate complexity and their lower bounds are exactly achieved as the user intensity goes to infinity, i.e., considering the "full load" case, C dl ν,F D and C ul ν,F D reduce to their lower bounds in (24) and (26) with Ξ dl m (s) and Ξ ul (s) given by…”

“…where λ M k=1 λ k . For some special cases, (24) and (26) can be largely simplified, as discussed in the following: ds, (30) and they have a much simpler form with a single integral.…”

“…Thus, we get very neat and tight lower bounds on C dl ν,F D and C ul ν,F D . In addition to the great feature of generality in the tight bounds in (24) and (26), there are two important implications that can be learned by inspecting Ξ dl m (s) in (25) and Ξ ul (s) in (27). First, we learn that using large user association biases helps to suppress the self-interference and the FD interferences because making λ dl = M k=1 λ k E ψ dl…”

Transmission Capacity of Full-Duplex MIMO Ad-Hoc Network with Limited Self-Interference Cancellation

“…Here, we assume r k r b k = r a k , ∀k, where the interference power from each interfering pair is measured 1 In this paper, we assume the SI always has priority to be cancelled first. More detailed analysis of why to cancel SI at first can be found in [22]. from the same distance but with independent channel fading.…”

Full-Duplex Enabled Cloud Radio Access Network

“…This trend follows from the recent major breakthroughs in signal processing techniques which combat self-interference (SI) directly in FD mode [7], [8]. On the other hand, the FD versus halfduplex (HD) SE gain, in cellular networks, is largely limited by the mutual interference (MI) between the downlink (DL) and uplink (UL) [9]- [11]. A potential remedy for tackling the MI bottleneck is through cooperative communications, also referred to as network multiple-input multiple-output (MIMO).…”