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What is UMTS and HSDPA?

What is UMTS and HSDPA?

1. UMTS is a 3G telecommunications technology that makes use of the W-CDMA, as well as other permutations therein; HSDPA is part of the 3G network, but is part of the High Speed Packet Access family, therefore capable of elevated performance.

What is a HSDPA network?

High-speed downlink packet access (HSDPA) is a mobile communications protocol that belongs to the high speed packet access (HSPA) family. HSDP allows networks based on (UMTS) to have higher data transfer speeds. Current HSDPA deployments support down-link speeds of 1.8MBPS, 3.6MBPS, 7.2MBPS and 14.4 MBPS.

Which modulation scheme is used in HSDPA?

HSDPA 16QAM use As a result the 16QAM modulation format is normally used under high signal conditions, e.g. when the mobile is close to the NodeB and in the clear. The coding rate as well as the modulation are then selected for each 2ms TTI by the NodeB according to its assessment of the conditions.

What is HSDPA throughput?

HSDPA provides a download rate of up to 7.2 Mbps. HSDPA is an enhanced 3G mobile telephone communications protocol. The 3.5G, 3G+ or turbo 3G, which allows networks based on Universal Mobile Telecommunications System to have higher data transfer speeds and capacity. Peak theoretical speeds of 14.4 Mbps.

Is HSPA or UMTS better?

High Speed Downlink Packet Access (HSDPA) is an enhanced 3G (third-generation) mobile communications protocol in the High-Speed Packet Access (HSPA) family. HSDPA is also known as 3.5G and 3G+. It allows networks based on the Universal Mobile Telecommunications System (UMTS) to have higher data speeds and capacity.

Is UMTS a 3G?

UMTS (Universal Mobile Telecommunications Service) is a third-generation (3G) broadband, packet-based transmission of text, digitized voice, video, and multimedia at data rates up to 2 megabits per second (Mbps).

What is UMTS network?

What modulation is UMTS?

The basic signal format for UMTS is WCDMA, but this can utilise a variety of different forms of modulation. The modulation used for UMTS WCDMA is dependent upon a variety of factors including spectrum efficiency, signal to noise ratio, error correction and a number of other variable.


Technology Overview UMTS provides a clear evolutionary path to high-speed packet access (HSPA). HSPA refers to the combination of high-speed downlink packet access (HSDPA) and high-speed uplink packet access (HSUPA). HSDPA allows data rates up to 14.4 Mbit/s in the downlink.

Is HSPA+ faster than 4G?

The theoretical maximum download speed of HSPA+ is actually higher than LTE at 168mbps compared to 100mbps. Theoretical upload speed is weighted firmly in LTE’s favour though with 50mbps playing 22mbps.