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RF/Microwave??

Chipsets quadruple spectral efficiency for microwave backhaul

Posted: 26 Feb 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Broadcom? spectral efficiency? SoC? 5G? LTE?

Broadcom Corp. has uncovered a pair of SoCs to give mobile access carriers with industry-leading capacity and spectral efficiency to boost existing microwave backhaul infrastructure. According to the company, the devices are the first to deliver 5Gb/s speeds and deliver four times increase in spectral efficiency of 48bps/Hz.

The SoCs are each designed to support the growing surge in data traffic over the wireless network, noted the company. With more than six 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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