Spectrally efficient fronthaul architectures for a cost-effective 5G C-RAN

• In 5G wireless systems, centralized RAN (C-RAN) is an architectural choice where the signal waveforms received by Remote Radio Heads (RRH) are transparently forwarded to base band units (BBU), in many cases using an optical fronthaul. Although C-RAN highly simplifies the RRH, which is positive from the operational cost standpoint, much of the system complexity and cost is shifted towards the optical fronthaul. In this paper we show how a cost-effective C-RAN requires a spectrally-efficient optical fronthaul, and discuss the technological options to realize it.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Nyckelord

5G transport

fronthaul

radio-over-fiber

spectral efficiency

Complex networks

Cost effectiveness

Costs

Fiber optic networks

Optical communication

Base band units

Remote radio heads

Signal waveform

Spectral efficiencies

System complexity

Wireless systems

Transparent optical networks

Publikations- och innehållstyp

ref (ämneskategori)

kon (ämneskategori)