Ericsson Boosts HSPA Uplink Capacity by 3X

Ericsson has demonstrated a technique to boost HSPA over-the-air uplink throughput for simultaneously active devices in a cell from around 4Mbps to more than 12Mbps. The demonstrated capacity used a 5 MHz WCDMA carrier and did not require upgrades to the HSPA client devices.


Ericsson said the gains are made possible by its commercially available receiver technology, Ericsson Interference Suppression, with 4-antenna radio base stations. The Interference Suppression base station receiver technology for WCDMA/HSPA leverages advanced software algorithms in the base station that greatly reduce the negative effects of uplink interference in the network. The gains were further enhanced by the use of base stations configured with four antennas per cell. This combination delivers a leap in end user experience and uplink capacity.


"We have proven that Ericsson's unique Interference Suppression is a giant leap forward and it will be the new reference for WCDMA uplink performance for years to come. This can even be further enhanced by combining it with multi-receive antenna technologies. Because these technologies work with existing devices, operators that implement them will instantly benefit from the attractive gain," stated Nils Viklund, Director WCDMA RAN at Ericsson.
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