Hierarchical codebook
Web15 de dez. de 2024 · In this section, we provide a detailed hierarchical codebook design method that is suitable for near-field scenarios. As illustrated in Fig. 1, the hierarchical codebook W = {W 1, W 2,..., W n l v} is consisted of n l v levels of codebook. The upper-layer codebooks W u = {W 1, W 2,... Web12 de jan. de 2024 · First, we present a novel ternary-tree-based fully-activated hierarchical codebook based on the sub-array division technique. The proposed hierarchical codebook surpasses its conventional binary-tree-based counterpart designed by using antenna deactivation in charge of the training overhead and synthesis performance of …
Hierarchical codebook
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Web13 de nov. de 2024 · Beam training based on hierarchical codebook for millimeter wave (mmWave) massive MIMO is investigated. Unlike the existing work using the same hierarchical codebook to estimate different multi-path components (MPCs), dynamic hierarchical codebooks which are updated according to the estimated MPCs are … Web15 de dez. de 2024 · Hierarchical Codebook Design for Near-Field MmWave MIMO Communications Systems. Jiawei Chen, Feifei Gao, Mengnan Jian, Wanmai Yuan. Communications system with analog or hybrid analog/digital architectures usually relies on a pre-defined codebook to perform beamforming. With the increase in the size of the …
Web1 de set. de 2010 · Hierarchical codebook(HCB) [8] is a coarse-to-fine foreground detection strategy, in which it involves two types of Cbs are of blockbased and pixel … Webto estimate different MPCs, we use dynamic hierarchical codebook which is updated according to the estimated MPCs. To summarize, our contribution mainly includes: 1) A general-ized hierarchical codebook design method is firstly proposed. 2) Then based on this method, we propose a beam training method which dynamically updates the …
WebThis allows for more flexible hierarchical codebook design [26]. Such codebooks can also be designed with logical sub-arrays only, which only requires an analog array [27]- [29] . Web2 de mar. de 2024 · Reconfigurable intelligent surface (RIS) has emerged as a competitive solution to the blocking problem in millimeter wave (mmWave) communications. …
Web17 de mar. de 2024 · In this paper, we propose an improved BT scheme under hierarchical codebook. First, we define an index to measure the power difference of the received …
Web13 de abr. de 2015 · 5. Hierarchical Codebook of SURF. In our system, the variability of pedestrians is represented by learning, in the first step, a codebook of local head appearances. 5.1. Hierarchical Codebook Generation. Clustering is a common method for learning a compact and discriminative codebook. dateline inside the hunt for el chapoWebcient hierarchical codebook by jointly exploiting sub-array and deactivation (turning-off) antenna processing techniques, where closed-form expressions are provided to generate … bi workcompcentralWebYou don’t have a set codebook; all codes arise directly from the survey responses. Here’s how inductive coding works: Break your qualitative dataset into smaller samples. Read a sample of the data. ... Hierarchical framing supports a larger code frame and lets you organize codes based on organizational structure. dateline in the bottom of the poolWebIn this article, multiuser beam training based on hierarchical codebook for millimeter wave massive multi-input multi-output is investigated, where the base station (BS) … biworld filterWeb21 de set. de 2024 · Beam training is an effective way to acquire channel state information (CSI) for the XL-RIS assisted system. Existing beam training schemes rely on the far-field codebook, which is designed based on the far-field channel model. However, due to the large aperture of XL-RIS, the user is more likely to be in the near-field region of XL-RIS. bi workspace in business objectsWeb1 de jan. de 2024 · Beam training based on hierarchical codebook for millimeter wave (mmWave) massive MIMO is investigated. Unlike the existing work using the same hierarchical codebook to estimate different multi-path components (MPCs), dynamic hierarchical codebooks which are updated according to the estimated MPCs are adopted. bi world problemsWeb16 de ago. de 2013 · Hierarchical codebook design for massive MIMO. Abstract: The massive Multiple-Input Multiple-Output (MIMO) is an emerging research field, since the … bi worldwide mexico s.a. de c.v