Packet-error rate based power budget for multiple-access WDM networks with subcarrier multiplexed control packets

2000 ◽  
Vol 12 (3) ◽  
pp. 359-361 ◽  
Author(s):  
D. Das ◽  
G. Dutta ◽  
D. Datta
Keyword(s):  
Error Rate ◽  
Multiple Access ◽  
Wdm Networks ◽  
Packet Error Rate ◽  
Power Budget ◽  
Control Packets

scholarly journals Delay-Sensitive NOMA-HARQ for Short Packet Communications

Entropy ◽  
2021 ◽  
Vol 23 (7) ◽  
pp. 880
Author(s):  
Faisal Nadeem ◽  
Mahyar Shirvanimoghaddam ◽  
Yonghui Li ◽  
Branka Vucetic
Keyword(s):  
Markov Model ◽  
Error Rate ◽  
Multiple Access ◽  
Time Slot ◽  
Packet Error Rate ◽  
Packet Delivery ◽  
Delivery Delay ◽  
Delay Sensitive ◽  
Optimal Power ◽  
Short Packet

This paper investigates the two-user uplink non-orthogonal multiple access (NOMA) paired with the hybrid automatic repeat request (HARQ) in the finite blocklength regime, where the target latency of each user is the priority. To limit the packet delivery delay and avoid packet queuing of the users, we propose a novel NOMA-HARQ approach where the retransmission of each packet is served non-orthogonally with the new packet in the same time slot. We use a Markov model (MM) to analyze the dynamics of the uplink NOMA-HARQ with one retransmission and characterize the packet error rate (PER), throughput, and latency performance of each user. We also present numerical optimizations to find the optimal power ratios of each user. Numerical results show that the proposed scheme significantly outperforms the standard NOMA-HARQ in terms of packet delivery delay at the target PER.

scholarly journals Enabling Multiple Access in Visible Light Communication Using Liquid Crystal Displays: A Proof-of-Concept Study

Electronics ◽  
2020 ◽  
Vol 9 (5) ◽  
pp. 826
Author(s):  
MD Rashed Rahman ◽  
Kehinde Adedara ◽  
Ashwin Ashok
Keyword(s):  
Liquid Crystal ◽  
Visible Light ◽  
Error Rate ◽  
Multiple Access ◽  
Visible Light Communication ◽  
Packet Error Rate ◽  
Communication Link ◽  
Proof Of Concept ◽  
Light Emitting ◽  
Light Emitter

The directionality of optical signals provides an opportunity for efficient space reuse of optical links in visible light communication (VLC). Space reuse in VLC can enable multiple-access communication from multiple light emitting transmitters. Traditional VLC system design using photo-receptors requires at least one receiving photodetector element for each light emitter, thus constraining VLC to always require a light-emitter to light-receptor element pair. In this paper, we propose, design and evaluate a novel architecture for VLC that can enable multiple-access reception using a photoreceptor receiver that uses only a single photodiode. The novel design includes a liquid-crystal-display (LCD) based shutter system that can be automated to control and enable selective reception of light beams from multiple transmitters. We evaluate the feasibility of multiple access on a single photodiode from two light emitting diode (LED) transmitters and the performance of the communication link using bit-error-rate (BER) and packet-error-rate (PER) metrics. Our experiment and trace based evaluation through proof-of-concept implementation reveals the feasibility of multiple LED reception on a single photodiode. We further evaluate the system in controlled mobile settings to verify the adaptability of the receiver when the LED transmitter changes position.

Symbol error rate analysis of non-orthogonal multiple access systems

2021 ◽  
Vol 46 ◽  
pp. 101295
Author(s):  
Ali Mohammed A. Alkhazzar ◽  
Hassan Aghaeinia
Keyword(s):  
Error Rate ◽  
Multiple Access ◽  
Symbol Error Rate ◽  
Rate Analysis

scholarly journals PERBANDINGAN UNJUK KERJA TRANSMISI JARINGAN FTTB MENGGUNAKAN GEPON DAN GPON

2017 ◽  
Vol 3 (2) ◽  
Author(s):  
Tri Nopiani Damayanti ◽  
Hasanah Putri
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Rise Time ◽  
Time Budget ◽  
Power Budget

Penelitian ini dilakukan untuk menganalisa perbandingan unjuk kerja transmisi teknologi GEPON dan GPON pada jaringan Fiber to the Building (FTTB). Pembahasan perbandingan menggunakan kedua teknologi PON tersebut untuk melihat performansi yang terbaik untuk di aplikasikan pada gedung bertingkat X menggunakan passive splitter dua tingkat dengan rasio perbandingan passive splitter maksimum 1:16. Unjuk kerja transmisi disimulasikan berdasarkan parameter link power budget, rise time budget serta nilai Bit Error Rate (BER) untuk kelayakan sistem jaringan. Perhitungan Unjuk jaringan dibagi menjadi bagian yaitu arah downstream dan arah upstream. Hasil perhitungan didapatkan pada arah downstream jarak terjauh, link GEPON menghasilkan nilai redaman sebesar 22.81 dB, BER sebesar 7x 10-29 dan nilai rise time sebesar 0,2506 ns. Pada link GPON memiliki redaman sebesar 25.94 dB, BER sebesar 3.62955 x 10-12 dan nilai rise time sebesar 0.25 ns. Pada arah upstream jarak terjauh, link GEPON menghasilkan nilai redaman sebesar 4.65 dB, dengan nilai BER ≈ 0 ,dan nilai rise time sebesar,2061 ns. Pada GPON memiliki redaman sebesar 4.65 dB, BER ≈ 0 dan nilai rise time sebesar 0,260 ns. Berdasarkan hasil unjuk kinerja kedua teknologi tersebut dapat disimpulkan bahwa unjuk kinerja teknologi GPON lebih baik dibandingkan teknologi GEPON untuk aplikasikan di jaringan optik gedung bertingkat.

scholarly journals A review of codebook design methods for sparse code multiple access

2021 ◽  
Vol 22 (2) ◽  
pp. 927
Author(s):  
Syed Aamer Hussain ◽  
Norulhusna Ahmad ◽  
Ibraheem Shayea ◽  
Hazilah Mad Kaidi ◽  
Liza Abdul Latiff ◽  
...  
Keyword(s):  
Bit Error Rate ◽  
Error Rate ◽  
Multiple Access ◽  
Design Methods ◽  
Sparse Code ◽  
Practical Implementation ◽  
Next Generation ◽  
Promising Technique ◽  
Codebook Design ◽  
Optimisation Technique

<span lang="EN-GB">The progressions in telecommunication beyond the 5<sup>th</sup> generation have created a need to improve research drifts. The current 5G study has an important focus on non-orthogonal multiple access (NOMA) technology. sparse code multiple access (SCMA) is a promising technique within NOMA, enhancing the multi-user handling capability of next-generation communication. In the SCMA sphere, codebook designing and optimisation are essential research matters. This study conversed with different codebook design practises existing in the literature, analysing them for numerous parameters, including bit error rate (BER), an optimisation technique, and channel settings. From the analysis, the paper presents the efficiency of different approaches. The article also discusses the prospects and challenges of SCMA optimisation in practical implementation in various domains.</span>

Packet Error Rate Measurements in Low Power Wide Area Networking Technologies for IoT

2019 ◽  
Author(s):  
Lucas R. Prando ◽  
Eduardo R. Lima ◽  
Leonardo S. de Moraes ◽  
Marcio B. Hamerschmidt ◽  
Claudio F. Dias ◽  
...  
Keyword(s):  
Low Power ◽  
Error Rate ◽  
Wide Area ◽  
Packet Error Rate ◽  
Networking Technologies
Sign in / Sign up

Export Citation Format

Share Document