WebNov 3, 2024 · In this paper, we study grant-free random access with massive multiple input multiple output (MIMO) systems. We first show that the performance of massive MIMO … WebNov 19, 2024 · In this paper, we investigate the activity detection in grant-free random access for mMTC in cell-free massive MIMO networks using distributed arrays. Each …
Identification of active users for grant-free massive connectivity in ...
WebDec 23, 2024 · Recently, grant-free random access schemes have received significant attention in the scientific community as a solution for extremely low-latency massive communications in new industrial Internet-of-things (IIoT) and digital twins applications. Unfortunately, the adoption of such schemes in the mmWave and THz bands is … WebIn this paper, we explore various multi-agent reinforcement learning (MARL) techniques to design grant-free random access (RA) schemes for low-complexity, low-power battery operated devices in massive machine-type communication (mMTC) wireless networks. We use value decomposition networks (VDN) and QMIX algorithms with parameter sharing … list of companies in orlando florida
An Approach to Preamble Collision Reduction in Grant …
WebApr 7, 2024 · ChatGPT is a free-to-use AI chatbot product developed by OpenAI. ... OpenAI also runs ChatGPT Plus, a $20 per month tier that gives subscribers priority access in … WebOct 1, 2024 · Conventional grant-based random access scheme is inappropriate to massive Internet of Things (IoT) connectivity since massive devices results in large number of collisions. This is unacceptable for the low latency requirement in 5 G and future networks. ... In order to alleviate the above problems, grant-free (GF) random access … WebNov 17, 2024 · Nonorthogonal multiple access (NOMA) is classified into grant-based (GB) random access (RA) and grant-free (GF) RA in 5G systems. GF NOMA RA allows user … list of companies in panama