Today’s DAS networks suffer from inefficiencies caused by remote radio heads used to boost the signal and the integration panels needed for attenuation between the base station and the DAS headend.
Using digital technology, remote radio head and integration panels can be eliminated in the system, John Spindler, director, product management, In-Building DAS, TE Connectivity, told DAS Bulletin. By connecting the DAS headend directly to the base station using a CPRI interface, a DAS will take up less space and produce less heat.
“If we take the baseband directly into the DAS headend, the footprint of the base station can be radically reduced. You won’t need the power amps and racks of integration panels between the base station and the DAS headend,” Spindler said.
TE Connectivity’s digital technology allows the baseband processor, which generates the signal, to be separated from the radio head function, which amplifies the signal for transmission over the antenna.
“We are letting the baseband processing be done where it is done best. By unlocking coverage from capacity, we can add more capacity and have more options for coverage with high power and low power,” Spindler said.
Because of TE Connectivity’s digital platform, the CPRI capability has always been there, but TE needed to partner with a base station OEM to make it a reality. The firm is working with an OEM vendor to connect its base station into directly into the DAS headend.