Results 21 to 30 of about 18,963,725 (262)
New multiple access and waveform technology for 6G
Dianxin kexue, 2022 With the explosive growth of Internet devices, the 5G new radio (NR) system faces congestion and high latency issues due to the low access efficiency of traditional orthogonal multiple access (OMA).Besides this, the performance of the orthogonal ...
Hua LI +4 more
doaj +2 more sources
Research on PDMA communication system based on complete complementary sequence
EURASIP Journal on Wireless Communications and Networking, 2020 Pattern division multiple access (PDMA) is a new non-orthogonal multiple access (NOMA) technology. It is proposed to meet the challenge of 5G large-scale connectivity and high-frequency spectral efficiency.
Shufeng Li, Baoxin Su, Libiao Jin
doaj +1 more source
Construction of nested pattern matrix with large girth for PDMA systems
Electronics Letters, 2021 In this letter, a new method is proposed to construct the pattern matrix (PM) with both nested structure and large girth for pattern division multiple access (PDMA) system. The proposed method contains two steps.
Qingqing Liu, Jin Xu
doaj +1 more source
Electronics Letters, 2022 In this letter, a fixed‐latency interleaver architecture is proposed for interleave division multiple access (IDMA) systems. The existing multi‐stage algebraic interleaver suffers from the high latency originated from a series of multipliers and adders ...
Byeong Yong Kong
doaj +1 more source
Repeat accumulate code division multiple access and its hybrid detection
, 2008 In this paper, we propose the novel concept of Repeat Accumulate Code Division Multiple Access (RA-CDMA), which employs unique, user-specific channel code generator matrices (interleavers) for differentiating the users.
Chen, Sheng +3 more
core +2 more sources
DDMA MIMO radar system for low, slow, and small target detection
The Journal of Engineering, 2019 The low, slow, and small (LSS) target detection has always been a problem for both ground-based and air-borne radar systems. The factors such as weak target reflection energy, ground clutter, and random Doppler component will have a severe impact on ...
Fawei Yang +3 more
doaj +1 more source
Investigating the Factors Affecting Political Violence with Emphasis on Ethnic Cleavage in West Azerbaijan Province [PDF]
پژوهشهای راهبردی مسائل اجتماعی ایران, 2021 Introduction: The purpose of the present study is to investigate the factors affecting political violence with emphasis on ethnic cleavage in West Azerbaijan province. Ethnic group relations are often associated with strife and tension in most societies.
Sajjad Moeinfar +2 more
doaj +1 more source
TDTS: Three-Dimensional Traffic Scheduling in Optical Fronthaul Networks with Conv-LSTM
Photonics, 2021 Given the more intensive deployments of emerging Internet of Things applications with beyond-fifth-generation communication, the access network becomes bandwidth-hungry to support more kinds of services, requiring higher resource utilization of the ...
Bowen Bao +5 more
doaj +1 more source
Journal of Electrical Engineering, 2022 Abstract This communication suggests an orthogonal interleaver set for interleave division multiple access (IDMA) based non orthogonal multiple access (NOMA) schemes from beyond 5G viewpoint to support enormous increase in user count.
Shivani Dixit +2 more
openaire +1 more source
A novel uplink multiple access scheme based on TDS-FDMA
, 2011 This contribution proposes a novel time-domain synchronous frequency division multiple access (TDS-FDMA) scheme to support multi-user uplink application.
Dai, Linglong +5 more
core +2 more sources