Partial Inter-Relay Interference Cancellation in Two Path Successive Relay Network

Ji, Yuchu; Han, Changcai; Wang, Anguo; Shi, Heping

doi:10.1109/lcomm.2014.011714.140016

Cited by 21 publications

(12 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An inter-relay self-interference cancellation method was investigated to cancel the IRI at relay nodes for AF-based two-path successive relaying protocol [15]. Full interference cancellation (FIC) and partial interference cancellation (PIC) were proposed to suppress the IRI at the destination for the two-path successive relaying systems in [16] and [17]. More recently, a precoding-based interference cancellation scheme based on row-space mapping was proposed for AF two-path successive relay networks [18], where a combined decoding and re-encoding scheme is designed to cancel the IRI signal and the accumulated noise at relays without any knowledge of channel state information (CSI).…”

Section: Introductionmentioning

confidence: 99%

Successive Decode-and-Forward Relaying With Privacy-Aware Interference Suppression

Wei

Chen

2020

IEEE Access

View full text Add to dashboard Cite

Successive relaying holds the promise of achieving spatial diversity gain for single-antenna users while recovering the multiplexing loss due to the half-duplex relaying in B5G/6G. However, how to mitigate inter-relay interference (IRI) with privacy protection in low complexity remains open. In this paper, we present a successive decode-and-forward (DF) relaying protocol based on an analog network interference cancellation (NICE) method, which may suppress IRI, using linear processing without decoding the signals from the source. More specifically, a relay actively keeps receiving signals from the source, which are then used as prior knowledge to enable an amplify-and-cancel (AC) IRI mitigation strategy. The AC based IRI suppression is capable of improving high information privacy, because a relay does not need to know codebooks used by other relays and will not decode any signals intended for other relays. We obtain the closed-form expression of the minimum residual interference power, based on which the average throughput and the optimal diversity-multiplexing tradeoff (DMT) are presented. The DMT analysis along with simulations shows that the proposed method outperforms conventional two-timeslot half-duplex relaying in terms of the spectral efficiency. It also achieves lower complexity than CAO-SIR based on decodeand-cancel (DC) in [1] and lower IRI than the successive amplify-and-forward (AF) relaying in [2].

show abstract

Section: Introductionmentioning

confidence: 99%

Successive Decode-and-Forward Relaying With Privacy-Aware Interference Suppression

Wei

Chen

2020

IEEE Access

View full text Add to dashboard Cite

show abstract

“…In order to recover 50 % SE loss, successive relaying (SR) protocol has recently emerged because of its specific design that two half‐duplex relays form a virtual full‐duplex relay . The most studied conventional SR protocol is two‐path successive relaying (TPSR) , which employs two relays to work alternatively and provide continuous two‐hop transmission. Consequently, L + 1 time intervals are required to transmit L symbols.…”

Section: Introductionmentioning

confidence: 99%

“…The performance of amplify‐and‐forward (AF) and decode‐and‐forward TPSR networks has been well investigated in . However, these investigations in achievable rate , bit error rate (BER) , outage probability , and diversity‐multiplexing tradeoff show that the inter‐relay interference (IRI) significantly limits the performance of TPSR, which is one of the most crucial problems in TPSR protocol design . Thus, many IRI management techniques have been proposed for TPSR protocol, such as interference cancellation strategies , coding strategies , and IRI utilisation strategies .…”

Section: Introductionmentioning

confidence: 99%

Three-path successive relaying protocol with blind inter-relay interference cancellation and cooperative non-coherent detection

Ren

Chen

Kuo

et al. 2016

Wirel. Commun. Mob. Comput.

View full text Add to dashboard Cite

Successive relaying has recently emerged as a spectral-efficient technique for cooperative wireless communications. However, in scenarios with uncertain accuracy of instantaneous channel state information (CSI), the scope of conventional two-path successive relaying protocol shrinks. This is due to the challenges of cancelling inter-relay interference (IRI) and detecting signals efficiently without specific CSI. The two challenges motivate us to propose a novel double listening 3-path successive relaying (DL3PSR) protocol to mitigate the successive relaying's dependence on accurate instantaneous CSI. We overcome the first challenge by proposing a blind IRI cancellation technique, and its effectiveness is proven. After blind IRI cancellation, the challenge of efficient signal detection is overcome by robust cooperative non-coherent detection, which consists of exclusive OR (XOR) demodulation and joint decoding. Based on constellation mapping, XOR demodulation is designed to demodulate M-ary phase-shift keying symbols without instantaneous CSI. Moreover, joint forward and backward decoding strategy is proposed to improve the robustness of data detection by retrieving two independent versions of the original data. Furthermore, the detection threshold, bit error probability, and achievable rate of DL3PSR are theoretically obtained. Simulations verify that in scenarios without full knowledge of CSI, DL3PSR protocol outperforms conventional two-path successive relaying in bit error performance and that the rate of DL3PSR is close to that of the full-duplex relaying.

show abstract

“…With two AF relays to assist the source transmission, all packets that are originated at the source will bounce and snowball between the relays and amass at the destination. In order to mitigate the inter-relay interference (IRI) due to simultaneous transmissions from the source and relays, various IRI cancellation schemes were proposed in [5]- [7] that require global channel state information (CSI) at the destination. By exploiting dirty-paper coding (DPC) [8] at the source to precancel the IRI, improved achievable rates of TPRC were derived in [9].…”

Section: Introductionmentioning

confidence: 99%

“…On this basis, the decoding of successive packets received at D can be similarly characterized by a Markov chain. Thus rather than dealing with the complex structure of the channel matrix to characterize the capacity of TPRC [4]- [7], [10], [11], we exploit the properties of a Markov chain to derive closed-form expressions for the outage probability of TPRC. Our results demonstrate that a reasonably good performance of TPRC is achieved while without requiring complex coding designs.…”

Section: Introductionmentioning

confidence: 99%

Cooperative two-path relay channels: Performance analysis using a Markov framework

Pandharipande

et al. 2015

2015 IEEE International Conference on Communications (ICC)

View full text Add to dashboard Cite

We consider a cooperative two-path relay channel (TPRC) where a data source transmits new packets to a corresponding destination, with the assistance of two intermediate relays alternatively. When the transmitted source packet is successfully decoded by a relay, the relay proceeds to forward this packet in the subsequent time slot, otherwise it simply stays silent. Due to the inter-relay channels, the decoding result at a relay in the current time slot depends on the decoding result at the other relay in the previous time slot and not on that preceded it. In view of this property, we employ a Markov framework to analyze the decoding performance at the relays. The decoding of successive packets received at the destination can be similarly analyzed by using a Markov chain. Closed-form expressions of the outage probability are derived for TPRC by exploiting the properties of a Markov chain. Numerical results demonstrate that with the proposed scheme, a reasonably good performance is achieved with only a single-slot delay and relatively low complexity.Index Terms-Two-path relay channels, decode-and-forward, successive interference cancellation, Markov chain.

show abstract

Partial Inter-Relay Interference Cancellation in Two Path Successive Relay Network

Cited by 21 publications

References 11 publications

Successive Decode-and-Forward Relaying With Privacy-Aware Interference Suppression

Successive Decode-and-Forward Relaying With Privacy-Aware Interference Suppression

Three-path successive relaying protocol with blind inter-relay interference cancellation and cooperative non-coherent detection

Cooperative two-path relay channels: Performance analysis using a Markov framework

Contact Info

Product

Resources

About