Book ; Online: From ORAN to Cell-Free RAN
Architecture, Performance Analysis, Testbeds and Trials
2023
Abstract: ... RAN) of the fifth generation (5G) and beyond mobile communications. As a key technology ... Starting from scalable implementation of CF-mMIMO, we study a cell-free RAN (CF-RAN) under the ORAN ... of CF-RAN under ORAN architecture, including time-frequency synchronization and over-the-air reciprocity ...
Abstract | Open radio access network (ORAN) provides an open architecture to implement radio access network (RAN) of the fifth generation (5G) and beyond mobile communications. As a key technology for the evolution to the sixth generation (6G) systems, cell-free massive multiple-input multiple-output (CF-mMIMO) can effectively improve the spectrum efficiency, peak rate and reliability of wireless communication systems. Starting from scalable implementation of CF-mMIMO, we study a cell-free RAN (CF-RAN) under the ORAN architecture. Through theoretical analysis and numerical simulation, we investigate the uplink and downlink spectral efficiencies of CF-mMIMO with the new architecture. We then discuss the implementation issues of CF-RAN under ORAN architecture, including time-frequency synchronization and over-the-air reciprocity calibration, low layer splitting, deployment of ORAN radio units (O-RU), artificial intelligent based user associations. Finally, we present some representative experimental results for the uplink distributed reception and downlink coherent joint transmission of CF-RAN with commercial off-the-shelf O-RUs. |
---|---|
Keywords | Computer Science - Information Theory ; Electrical Engineering and Systems Science - Signal Processing |
Publishing date | 2023-01-30 |
Publishing country | us |
Document type | Book ; Online |
Database | BASE - Bielefeld Academic Search Engine (life sciences selection) |
Full text online
More links
Kategorien
Inter-library loan at ZB MED
Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.