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5Gb/s SoCs offer four-fold boost in spectral efficiency

Posted: 26 Feb 2015     Print Version  Bookmark and Share

Keywords:Broadcom  spectral efficiency  SoC  5G  LTE 

Broadcom Corp. has unleashed a couple of SoC devices to offer mobile access carriers with industry-leading capacity and spectral efficiency to enhance existing microwave backhaul infrastructure. The devices are the first to deliver 5Gb/s speeds and deliver four times increase in spectral efficiency of 48bps/Hz, noted the company.

The SoCs are each designed to support the growing surge in data traffic over the wireless network, noted the company. With more than 6 billion people communicating over cellular networks and the growth of mobile services such as 5G and LTE, optimisation and efficiency in the backhaul is essential and a more efficient technology can deliver greater capacity over the same spectrum.

Broadcom's BCM85650 features integrated cross-polarisation interference cancellation (XPIC) and line-of-sight multiple-input and multiple-output (LoS-MIMO) functionalities to boost spectral efficiency. Innovative integrated LoS-MIMO technology significantly eases carrier deployments by supporting flexible antenna placement and reducing external connection and hardware requirements.

The BCM85650 includes a dual-core wideband modem and supports advanced channel aggregation functionality for flexible and efficient capacity doubling. It also delivers 4K-QAM (quadrature amplitude modulation), the industry's highest modulation available today, Broadcom stated.

The Broadcom BCM85820 enables capacity and spectral efficiency gains through integrated support for XPIC, MIMO, 4K-QAM modulation, 112MHz channels and channel aggregation functionality. The BCM85820 employs advanced digital RF correction mechanisms, such as adaptive digital-pre-distortion (ADPD) functionary to achieve high system gain. The highly-integrated BCM85820 includes full transceiver as well as synthesiser components.

Broadcom's offerings enable carriers and telecom equipment manufacturers to enjoy a modular and flexible system design with a "pay-as-grow" architecture, supporting capacity doubling with XPIC or carrier aggregation and capacity quadrupling with XPIC + carrier aggregation or XPIC + MIMO.

Broadcom's BCM85650 and BCM85820 are sampling.





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