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HSDPA - High Speed Downlink Packet Access

Acronym for High Speed Downlink Packet Access.

High Speed Downlink Packet Access, or HSDPA, is a packet based data service feature of the in WCDMA standard which provides a downlink with data transmission up to 8-10 Mbps (and 20 Mbps for MIMO systems) over a 5MHz bandwidth in WCDMA downlink. The high speeds of HSDPA is achieved through techniques including; 16 Quadrature Amplitude Modulation, variable error coding, and incremental redundancy. HSDPA is a technology upgrade to current UMTS networks.

See also UMTS.

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