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Centralized Radio Access Network (C-RAN) architecture is the enabling technology for the deployment of massive number of antennas essential to meet the requirements of next generation (5G and beyond) mobile systems. In C-RAN the fronthaul links between processing Base Band Units (BBUs) and Remote Antenna Units (RAUs) are conventionally based on fiber optic, although its deployment cost can be excessive...
In this paper we consider a centralized radio access network (C-RAN) architecture with a fully analog fronthaul link between remote radio heads (RRHs) and baseband units (BBUs) based on the radio over fiber (RoF) paradigm. Mode division multiplexing (MDM) and frequency division multiplexing (FDM) are employed to provide an additional multiplexing signal dimension to meet the huge bandwidth requirements...
Centralized Radio Access Network (C-RAN) architecture is considered the only viable solution to handle the complex interference scenarios generated by massive antenna and small cell deployment foreseen for next generation (5G) mobile networks. The fronthaul links used to exchange the signal between Base Band Units (BBUs) and Remote Radio Heads (RRHs) are conventionally based on optical fiber, due...
Centralized Radio Access Network (C-RAN) architecture is the only viable solution to handle the complex interference scenario generated by massive antennas and small cells deployment as required by next generation (5G) mobile networks. In conventional C- RAN, the fronthaul links used to exchange the signal between Base Band Units (BBUs) and Remote Antenna Units (RAUs) are based on digital baseband...
Linear precoding for Far-End CrossTalk (FEXT) cancellation is supported by the first release of the next generation DSL standard G.fast utilizing bandwidth up to 106 MHz. The cancellation precoding for the second release (bandwidth up to 212 MHz with much stronger FEXT) has not been standardized yet. Non-linear Tomlinson-Harashima Precoding (THP) is a promising candidate as it outperforms the linear...
This paper considers the interference-mitigation cooperation over a secure 2-user Gaussian Interference Channel with Limited Information Exchange at the Transmitters (GIC-LIET) over an infinite rate link between the two transmitters. The information exchange between the transmitters enables the precoding based on Block- Diagonalization and the privacy constrains the messages of one transmitter to...
Vectoring based on Tomlinson-Harashima Precoding (THP) has been proposed for downstream FEXT cancellation in G.fast DSL system. However, it suffers from the lack of scalability and latency accumulation due to nonlinear THP, especially for a large number of ports. In this paper, we propose a novel precoding technique based on a single DSL Access Multiplexer (DSLAM) that hosts multiple Vector Processors...
Cooperation among mobile operators non-orthogonally sharing the communication resources can considerably boost network efficiency if the interference originated from the non-orthogonal communication is properly addressed. Utilization of standard precoding methods would require sharing of sensitive information such as users' signals and channel state information. In this paper, we propose a novel cooperative...
G.fast is an upcoming next generation DSL standard envisioned to use bandwidth up to 212 MHz. Far-end crosstalk (FEXT) at these frequencies greatly overcomes direct links. Its cancellation based on non-linear Tomlinson-Harashima Precoding (THP) proved to show significant advantage over standard linear precoding. This paper proposes a novel THP structure in which ordering of successive interference...
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