Dual-hop relaying networks for short-packet URLLCs: Performance analysis and optimization

Abstract

Article that has been accepted for inclusion in a future issue of a journal. Content is final as presented, with the exception of pagination.

Intelligent reflecting surface‐assisted beamforming‐NOMA networks for short‐packet communications: Performance analysis and deep learning approach

“…For setting parameters, we also utilize the key simulation parameters provided in Table 2. Unless otherwise stated, as follows: $${G_1}= 1$$, $${G_2}= 0.1$$, $$\bar{\gamma }= 20{\rm {dB}}$$, $${\cal K}= 512\,{\rm {CUs}}$$, $$\nu = 2$$ [42] , $${\beta _1} = {\beta _2}= 256\,{\rm {bits}}$$ [33], $$N=2$$, $${\alpha _1} = [ {0.5;0.6;0.8} ]$$, $${\alpha _2}= [0.5;0.4;0.2]$$, $${d_0}= {d_1}= {d_2} ={1}$$, and $$L= 4$$ throughout for this section unless otherwise stated.…”

“…As proven to have high precision in ref. [33], Riemann integral approximation method, i.e. $$\int \limits _a^b {f(z )\text{d}z} = ({b - a} )f({\frac{{a + b}}{2}} )$$ is utilized for Equation ().…”

“…CUs, 𝜈 = 2[42] , 𝛽 1 = 𝛽 2 = 256 bits[33],N = 2, 𝛼 1 = [0.5; 0.6; 0.8], 𝛼 2 = [0.5; 0.4; 0.2], d 0 = d 1 = d 2 = 1,and L = 4 throughout for this section unless otherwise stated.Regarding to the DNN simulation, we use the training parameters shown in Table…”

Short Packet Communications for Relay Systems With Co-Channel Interference at Relay: Performance Analysis and Power Control

“…Different from [12,13], where the performance of the systems evaluated under infinite block length packet and power optimization was ignored [12,13], we consider a relaying system with short packet communications. Unlike [21], where DF relay protocol was deployed while we adopt AF relay system. Despite exploiting AF relay, the system of [22] with single antenna at all terminals was disregarded cochannel interference, however, our system considers multiple antennas at the source and the interference at the relay.…”

“…1) In contrast to [12,13,21,22], we investigate SPC for a relaying system consisting of one multiple antenna transmitter source, one AF relay under co-channel interference and one single antenna destination. 2) Due to multiple antenna at the source, we take into account two transmission schemes, namely transmit antenna selection (TAS) scheme and beamforming scheme using maximum ratio transmission (BS-MRT).…”