Beamforming Cancellation Design for Millimeter-Wave Full-Duplex

Roberts, Ian P.; Vishwanath, Sriram

doi:10.1109/globecom38437.2019.9013116

Cited by 32 publications

(26 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…HYBF for an integrated access and backhaul in a multi-cell mmWave FD system to serve the multi-antenna uplink (UL) users is proposed in [39]. HYBF for multi-antenna UL and downlink (DL) users served simultaneously in a mmWave FD system is studied in [40]- [44]. The contributions [40], [41], [43], [44] are limited to the case of one UL and one DL multi-antenna user, and in [42] we proposed HYBF for a single-cell mMIMO mmWave FD system under the limited dynamic range (LDR) by taking into account the distortions introduced by non-ideal hardware.…”

Section: A State-of-the-art and Motivationmentioning

confidence: 99%

“…HYBF for multi-antenna UL and downlink (DL) users served simultaneously in a mmWave FD system is studied in [40]- [44]. The contributions [40], [41], [43], [44] are limited to the case of one UL and one DL multi-antenna user, and in [42] we proposed HYBF for a single-cell mMIMO mmWave FD system under the limited dynamic range (LDR) by taking into account the distortions introduced by non-ideal hardware. Note that the literature does not contain any contribution for the multi-cell mMIMO mmWave FD system, i.e., to jointly serve the multi-antenna UL and DL users.…”

Section: A State-of-the-art and Motivationmentioning

confidence: 99%

See 1 more Smart Citation

Per-link Parallel and Distributed Hybrid Beamforming for Multi-Cell Massive MIMO Millimeter Wave Full Duplex

Sheemar¹,

Slock²

2022

Preprint

View full text Add to dashboard Cite

This paper presents two novel hybrid beamforming (HYBF) designs for a multi-cell massive multiple-input-multiple-output (mMIMO) millimeter wave (mmWave) full duplex (FD) system under limited dynamic range (LDR). Firstly, we present a novel centralized HYBF (C-HYBF) scheme based on alternating optimization. In general, the complexity of C-HYBF schemes scales quadratically as a function of the number of users and cells, which may limit their scalability. Moreover, they require significant communication overhead to transfer complete channel state information (CSI) to the central node every channel coherence time for optimization. The central node also requires very high computational power to jointly optimize many variables for the uplink (UL) and downlink (DL) users in FD systems. To overcome these drawbacks, we propose a very low-complexity and scalable cooperative per-link parallel and distributed (P$\&$D)-HYBF scheme. It allows each mmWave FD base station (BS) to update the beamformers for its users in a distributed fashion and independently in parallel on different computational processors. The complexity of P$\&$D-HYBF scales only linearly as the network size grows, making it desirable for the next generation of large and dense mmWave FD networks. Simulation results show that both designs significantly outperform the fully digital half duplex (HD) system with only a few radio-frequency (RF) chains and achieve similar performance.

show abstract

Section: A State-of-the-art and Motivationmentioning

confidence: 99%

Section: A State-of-the-art and Motivationmentioning

confidence: 99%

Per-link Parallel and Distributed Hybrid Beamforming for Multi-Cell Massive MIMO Millimeter Wave Full Duplex

Sheemar¹,

Slock²

2022

Preprint

View full text Add to dashboard Cite

show abstract

“…The IBFD base station transmits N Tx sym independent data symbols to DL users and receives N Rx sym independent data symbols from UL users, respectively. We have N Tx sym = N Tx RF N Tx ant and N Rx sym = N Rx RF N Rx ant to allow the fully-digital beamforming being decomposed into the digital beamfoming followed by RF beamforming without penalty [18]. At the BS, the N Tx sym modulated data symbols (either by PSK or QAM) at k th subcarrier s BS [k] are first converted into the time domain by leveraging N FFT -point IFFT followed by addition cyclic prefix.…”

Section: A Transmitted Signalsmentioning

confidence: 99%

“…IBFD introduces significant self-interference, which could be 100 dB higher than the received signal of interest (SoI) due to the proximity of the transmit and receive antenna arrays at the IBFD base station [24]. Thus, it has to be efficiently suppressed, otherwise, the SoI will be swamped and the UL communications will be invalidated [4], [18]. Typically, the significant SI is suppressed through three steps, where antenna isolation and active RF cancellation are essential to prevent the receiver from saturation [8] and digital cancellation processes the residual self-interference (RSI) due to imperfect analog cancellation.…”

Section: Signal Processing For Full-duplexmentioning

confidence: 99%

Design and Analysis of In-Band Full-Duplex Private 5G Networks Using FR2 Band

2021

View full text Add to dashboard Cite

This paper studies a solution for efficient industrial Internet of things (IIoT) communications through a in-band full-duplex (IBFD) enabled private 5G network in frequency range 2 (FR2) band (≥ 24.250 GHz), where ultra-reliable low-latency communications (URLLC) and enhanced mobile broadband (eMBB) devices can be simultaneously served. Large-scale antenna array and RF beamforming are applied, and a self-interference cancellation (SIC) scheme is proposed under such architecture. Particularly, the proposed RF cancellation scheme addressed two key issues of extending current technologies to wideband operations in FR2 band: limited operational bandwidth and the requirement for a large number of cancellers. Then, a frequency domain-based digital canceller is proposed to process with the residual self-interference (RSI) with short processing latency. A game theoretic user allocation algorithm is proposed to minimise cochannel interference (CCI) in a heterogeneous environment. Given a typical IIoT scenario, the performance of such IBFD private 5G network is evaluated in terms of bit-error rate (BER) and spectral efficiency (SE) through simulations and analysed based on numerical results and theoretical calculations. It is demonstrated that the latency of uplink eMBB devices can be reduced by 54% through IBFD radios, and the latency of downlink URLLC devices can be reduced to 0.5 ms with the help of flexible numerology, mini-slot, and self-contained sub-frames introduced in 5G NR. IBFD radios can enhance the SE by 92% compared to HD radios with our SIC and user allocation policy. The high SE in conjunction with abundant resources in FR2 band provide multi-Gbps peak data rates, high reliability, and massive connectivity.

show abstract

“…In [32], HYBF and combining design for two massive MIMO nodes, that simultaneously maximize the sum spectral efficiency and cancel the SI in the analog domain by keeping the signal level at the input of the ADCs under control is proposed. In [33], HYBF for two fully connected nodes that approaches SI-free sum-spectral efficiency is proposed. In [34], HYBF for mmWave equipped with analog beamforming stage is presented.…”

Section: A State-of-the-art On Mmwave Fdmentioning

confidence: 99%

Practical Hybrid Beamforming for Millimeter Wave Massive MIMO Full Duplex with Limited Dynamic Range

Sheemar¹,

Thomas²,

Slock³

2021

Preprint

View full text Add to dashboard Cite

Full-Duplex (FD) communication can revolutionize wireless communications as it doubles spectral efficiency and offers numerous other advantages over a half-duplex (HD) system. In this paper, we present a novel and practical joint hybrid beamforming (HYBF) and combining scheme for millimeter-wave (mmWave) massive MIMO FD system for weighted sum-rate (WSR) maximization with multi-antenna HD uplink and downlink users with non-ideal hardware. Moreover, we present a novel interference and self-interference (SI) aware optimal power allocation scheme for the optimal beamforming directions. The analog processing stage is assumed to be quantized, and both the unit-modulus and unconstrained cases are considered. Moreover, compared to the traditional sum-power constraints, the proposed algorithm is designed under the joint sum-power and the practical per-antenna power constraints. To model the non-ideal hardware of a hybrid FD transceiver, we extend the traditional limited dynamic range (LDR) noise model to mmWave. Our HYBF design relies on alternating optimization based on the minorization-maximization method. We investigate the maximum achievable gain of a hybrid FD system with different levels of the LDR noise variance and with different numbers of radio-frequency (RF) chains over a HD system. Simulation results show that the mmWave massive MIMO FD systems can significantly outperform the fully digital HD systems with only a few RF chains if the LDR noise generated from the limited number of RF chains available is low. If the LDR noise variance dominates, FD communication with HYBF results to be disadvantageous than a HD system.

show abstract

Beamforming Cancellation Design for Millimeter-Wave Full-Duplex

Cited by 32 publications

References 14 publications

Per-link Parallel and Distributed Hybrid Beamforming for Multi-Cell Massive MIMO Millimeter Wave Full Duplex

Per-link Parallel and Distributed Hybrid Beamforming for Multi-Cell Massive MIMO Millimeter Wave Full Duplex

Design and Analysis of In-Band Full-Duplex Private 5G Networks Using FR2 Band

Practical Hybrid Beamforming for Millimeter Wave Massive MIMO Full Duplex with Limited Dynamic Range

Contact Info

Product

Resources

About