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Analysis of mobile fronthaul bandwidth and wireless transmission performance in split-PHY processing architecture
Optics Express
|February 3, 2016
Summary
The split-PHY processing (SPP) architecture significantly reduces mobile fronthaul bandwidth by 97% for centralized/cloud RAN (C-RAN). It maintains wireless bit error rate performance with a minor signal-to-noise ratio penalty.
Area of Science:
- Telecommunications Engineering
- Wireless Communication Systems
- Radio Access Networks
Background:
- Centralized/cloud Radio Access Networks (C-RAN) face challenges with high mobile fronthaul (MFH) bandwidth requirements.
- Conventional C-RAN architectures can limit the effectiveness of coordinated multi-point (CoMP) transmission and reception.
Purpose of the Study:
- To analyze the mobile fronthaul (MFH) bandwidth and wireless transmission performance of the split-PHY processing (SPP) architecture.
- To evaluate the SPP architecture's ability to redefine functional splits in C-RAN while preserving CoMP performance.
Main Methods:
- Simulated the SPP architecture, which reallocates base station functions for wireless channel coding/decoding and modulation/demodulation.
- Implemented unique CoMP joint transmission and reception schemes within the SPP architecture.
- Compared MFH bandwidth and wireless bit error rate (BER) against conventional C-RAN.
Main Results:
- The SPP architecture achieved a reduction in MFH bandwidth by up to 97% compared to conventional C-RAN.
- Wireless transmission performance, specifically bit error rate (BER), was comparable to conventional C-RAN.
- A minor signal-to-noise ratio (SNR) penalty of only 2-dB was observed in uplink joint reception.
Conclusions:
- The SPP architecture offers a significant reduction in MFH bandwidth, addressing a key challenge in C-RAN deployments.
- SPP effectively preserves wireless CoMP performance, demonstrating its viability for advanced radio access networks.
- This architecture presents a promising solution for efficient and high-performance wireless communication systems.
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