Cooperative Relaying System Combining OMA and NOMA for Cell-Edge and Cell-Center Users
نویسندگان
چکیده
In this letter, we propose a cooperative relaying system (CRS) combining orthogonal multiple access (OMA) and non-orthogonal (NOMA) for uplink transmission. the proposed system, cell-center user (CCU) amplifies forwards cell-edge (CEU) signal to base station (BS), meanwhile transmitting its own signals by NOMA. This win-win operation drives CCU CEU work together, is particularly useful when holds good channel conditions BS but lacks radio resources. Both analytical asymptotic expressions of outage probability are derived CCU. Simulation results demonstrate large performance gains achieved over benchmark schemes, owing adoption system.
منابع مشابه
A Fair Power Allocation for Non-Orthogonal Multiple Access in the Power Domain
This paper presents an investigation on the performance of the Non-Orthogonal Multiple Access (NOMA) in the power domain scheme. A Power Allocation (PA) method is proposed from NOMA throughput expression analysis. This method aims to provide fair opportunities for users to improve their performance. Thus, NOMA users can achieve rates higher than, or equal to, the rates obtained with the convent...
متن کاملDownlink Multichannel Sharing and Joint Detection for Cell-Edge Users
Since data rates for cell-edge users cannot be improved by merely increasing transmission power due to inter-cell interference (ICI), the interference management and alignment become crucial for cell-edge users. In this paper, we consider a simple approach where each base station (BS) in coordination transmits signals to a dedicated user through multiple subcarriers shared by adjacent BSs so th...
متن کاملCooperative Subcarrier Allocation for an OFDM Relaying System with Grouped Users
In this article, the problem of downlink subcarrier allocation in a cooperative wireless multiuser OFDM system is investigated. We consider a single-cell where all the users are paired in cooperative groups. The mobile users in each group amplify and forward their partner’s data stream using a time division protocol. Based on the capacity contribution from the relaying terminal, a new parameter...
متن کاملsimulation and design of electronic processing circuit for restaurants e-procurement system
the poor orientation of the restaurants toward the information technology has yet many unsolved issues in regards to the customers. one of these problems which lead the appeal list of later, and have a negative impact on the prestige of the restaurant is the case when the later does not respond on time to the customers’ needs, and which causes their dissatisfaction. this issue is really sensiti...
15 صفحه اولEdge Computing Aware NOMA for 5G Networks
With the fast development of Internet of things (IoT), the fifth generation (5G) wireless networks need to provide massive connectivity of IoT devices and meet the demand for low latency. To satisfy these requirements, Non-Orthogonal Multiple Access (NOMA) has been recognized as a promising solution for 5G networks to significantly improve the network capacity. In parallel with the development ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Advances in computer, signals and systems
سال: 2023
ISSN: ['2371-882X', '2371-8838']
DOI: https://doi.org/10.23977/acss.2023.070604