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12 articles for “Pilot contamination”
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Interference Effect Analysis of Pilot Contaminated Massive MIMO Downlink with Different Pre-coders and Channel Estimation
Abstract: A new idea in cellular MU-MIMO is the use of large numbers of BS antennas to serve several single-antenna terminals simultaneously. In multi-cell environments, adjacent cells using the same spectrum cause a pilot contamination problem and degrade signal quality. This pilot overhead can be reduced by reusing pilot sequences in nearby cells; however, this potentially introduces interference in the channel estimation phase, the so-called "pilot contamination" effect. The achievable rate …
Published in Journal of Telecommunication, Switching Systems and Networks · Vol. 4, Issue 2, 2017 · pp. 1–9 Read article
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Channel Estimated Modulation Techniques for Wireless Communication Systems: Review
Abstract: The high spectrum and energy capabilities of Multiple Input Multiple Output systems make them a propitious technology for 5th-generation wireless communication systems. The acquisition of channel information is crucial for utilizing the potential gains of the multi-modal systems. Numerous studies have established channel estimation techniques and are still in research which faced several challenges with downlink-uplink overheads, complexities, and pilot contamination. This work discusses the insights obtained from the reviewed …
Published in Trends in Opto-electro & Optical Communication · Vol. 15, Issue 2, 2025 · pp. 1–10 Read article
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Deep Learning Enhanced Compressive Sensing for Wireless IoT Data Optimization and Weather Monitoring.
Abstract: This research explores the application of deep learning and compressive sensing in order to optimize data traffic in non-orthogonal multiple access (NOMA)-based wireless internet of things (IoT) networks and weather monitoring. Such a framework would be very effective and overcome pilot attacks and reconstruction losses for secure data transmission. In this regard, a strong communication model has been adopted based on power-domain NOMA for simultaneous wireless transmission by multiple IoT …
Published in International Journal of Satellite Remote Sensing · Vol. 2, Issue 2, 2024 · pp. 20–36 Read article
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Capacity and BER Performance Analysis of Single Cell Massive MIMO with Various Precoding Techniques
Abstract: AbstractMassive Multi Input Multi Output (MIMO) is one of the promising technologies which will facilitate the 5th generation wireless communication system (5G) in the near future. It also goes by other names such as, large MIMO, hyper MIMO, full-dimension MIMO and ARGOS. In this technology the Base Station is incorporated with a large number of transmitting antennas (e.g., Hundreds, thousands). A large number of antenna help to focus the energy …
Published in Journal of Communication Engineering & Systems · Vol. 6, Issue 1, 2016 · pp. 1–14 Read article
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Performance Enhancement of Broadband Cellular Networks Using Massive MIMO Technology
Abstract: The rapid growth of mobile data traffic driven by smartphones, Internet of Things (IoT) devices, video streaming, and cloud-based applications has placed significant pressure on existing broadband cellular networks. As the need for faster data transmission, enhanced spectrum utilization, and dependable wireless communication continues to grow, Massive Multiple-Input Multiple-Output (Massive MIMO) has become a fundamental technology for modern communication networks, particularly in 5G and future-generation wireless systems. Massive MIMO technology …
Published in Journal of Communication Engineering & Systems · Vol. 16, Issue 2, 2026 · pp. 11–18 Read article
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A Preliminary Report on Groundwater Contamination of Majha Belt of Punjab due to Heavy Metal Arsenic
Abstract: Punjab is facing a crisis situation due to high levels of heavy metals in underground water table of Punjab. ICAR has reported arsenic beyond safe limit in 13 districts of Punjab. According to PWSSD report, there are 2748 habitations out of 6884 surveyed in Punjab, which fall under quality affected (QA) category (40% nearly). Out of all QA habitations in Punjab, 60% fall in Majha belt of Punjab, namely, Amritsar, …
Published in Research and Reviews: A Journal of Toxicology · Vol. 7, Issue 3, 2017 · pp. 27–33 Read article
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Groundwater Contamination of Amritsar District of Punjab due to Heavy Metals Iron and Arsenic and its Mitigation
Abstract: Punjab is facing a crisis situation due to high levels of heavy metals in underground water table of Punjab. ICAR has reported arsenic beyond safe limit in 13 districts of Punjab. According to PWSSD report, the highest number of qualities affected (QA) habitations due to arsenic and iron fall under the geographical area of Amritsar district in Punjab. In this survey, groundwater quality data pertaining to arsenic and iron is …
Published in Research and Reviews: A Journal of Toxicology · Vol. 9, Issue 2, 2019 · pp. 18–27 Read article
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Analysis of Bore and Pond Waters at Storage Used for Drinking in Villages of Coimbatore for Determination of Coliforms
Abstract: The aim of the study was to identify the MPN Index of the water samples that were available for drinking purpose in selected villages. The water that was used for drinking should be free from any form of contamination in order to prevent ourselves getting infected by water borne diseases. The detection of Coliforms by this method helps in the identification of either the water shall used for drinking or …
Published in Research and Reviews : A Journal of Biotechnology · Vol. 1, Issue 1, 2011 · pp. 4–7 Read article
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AI-Enabled Recycling of Thermoplastic Polymer Waste in Hospitals: A Circular Economy Pathway Toward Green Hospital Certification
Abstract: This review research explores the latest role of AI in improving thermoplastic waste management for hospitals in terms of segregation accuracy, operational efficiency, and circular economy outcomes. Seventy-five relevant studies were analysed, and it was reported that AI-based systems, especially CNNs, YOLO models, and sensor-fusion approaches, achieved high accuracy in the identification and sorting of medical plastics, often above 90%. Early evidence also reveals improvements in the reduction of contaminants, …
Published in Journal of Polymer & Composites · Vol. 14, Issue 2, 2026 · pp. 170–182 Read article
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Microalgae Based Wastewater Treatment: A Sustainable Approach
Abstract: The global water crisis and strict environmental policies demand advanced wastewater treatment techniques that combine pollution control with resource recovery. Microalgae-based wastewater treatment has emerged as a sustainable biotechnological solution that aligns with circular economy principles by simultaneously eliminating contaminants and producing valuable biomass that can be converted into useful products. This review paper provides an in- depth assessment of the application of microalgae in treating municipal, industrial, and agricultural …
Published in International Journal of Sustainability · Vol. 3, Issue 2, 2026 · pp. 1–15 Read article
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Treated Sewage in Fish Farming and Ecological Challenges
Abstract: The use of treated sewage in fish farming presents a sustainable and cost-effective approach towards resource conservation and aquaculture productivity. Treated sewage is enriched with essential nutrients, like nitrogen and phosphorus, which supports the growth of aquatic plants and phytoplankton. These are vital components of aquaculture ecosystems. This practice reduces freshwater dependency and mitigates waste disposal challenges as well as aligns with circular economy principles. Pilot projects in China and …
Published in International Journal of Marine Life · Vol. 2, Issue 1, 2025 · pp. 26–31 Read article
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A Descriptive Study to Assess the Knowledge and Practices Among Staff Nurses Regarding Safe Urine Sample Collection in a Selected Hospital in Delhi, India
Abstract: Urine collection is a quick diagnostic test to assess kidney function. This study investigates the knowledge and practices of nurses regarding urine sample collection, a fundamental aspect of diagnostic procedures. Urine samples are critical for various tests, yet proper collection techniques are essential to ensure accuracy and prevent contamination. The study’s objectives were (a) To assess the level of knowledge among staff nurses regarding safe urine sample collection, and (b) …
Published in International Journal of Community Health Nursing And Practices · Vol. 2, Issue 2, 2024 · pp. 14–26 Read article