High Speed Downlink Packet Access (HSDPA) – A Means of Increasing Downlink Capacity in WCDMA Cellular Networks
Abstract:
The increasing demand for capacity in order to provide high data rate multimedia services in wireless environments necessitates enhanced radio transmission techniques and network protocol functionality. Such techniques have to be added to already existing mobile cellular networks, e.g. as provided by EDGE. For 3rd generation UMTS networks based on WCDMA, the High Speed Downlink Packet Access (HSDPA) is bein ....etc

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High Speed OFDM Packet Access (HSOPA) also called as super 3G can be said as the successor of HSDPA and HSUPA technologies specified in 3GPP releases 5 and 6. This expected fraction of 3GPP s Long Term Evolution (LTE) upgrade path for UMTS systems has given a totally different air interface system with that of the W-CDMA. The characteristics of HSOPA includes -: · Utilizes 1.25 MHz to 20 MHz bandwidth compared with the 5MHz usage of W-CDMA. · The upload and downlink transfer rates is 50 Mbps and 100Mbps and has a spectral effici ....etc

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Prepared by:-
Shrey B. Mathuria




Aim
This presentation aims to analyze the confusion and over sayings surrounding the relative merits of various wireless broadband technologies like WiMAX, EDGE and get to the real reasons that will influence the success of mobile broadband and its ability to deliver broadband for all and everywhere.

Introduction: HSPA

HSPA, the undisputed choice for mobile
broadband
HSPA offers operators a single network for multiple services ....etc

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High Speed OFDM Packet Access

High Speed OFDM Packet Access (HSOPA) also called as super 3G can be said as the successor of HSDPA and HSUPA technologies specified in 3GPP releases 5 and 6. This expected fraction of 3GPP s Long Term Evolution (LTE) upgrade path for UMTS systems has given a totally different air interface system with that of the W-CDMA.

The characteristics of HSOPA includes -:

· Utilizes 1.25 MHz to 20 MHz bandwidth compared with the 5MHz usage of W-CDMA.

· T ....etc

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High-Speed Downlink Packet Access (HSDPA) (Sometimes known as High-Speed Downlink Protocol Access) is a 3G mobile telephony protocol in the HSPA family, which provides a roadmap for UMTS-based networks to increase their data transfer speeds and capacity. Current HSDPA deployments now support 1.8 Mbit/s, 3.6 Mbit/s, 7.2 Mbit/s and 14.4 Mbit/s in downlink.

Further speed grades are planned for the near future. The networks are then to be upgraded to HSPA Evolved, which provides speeds of 42 Mbit downlink in its first release.

In addition to ....etc

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ABSTRACT

In the last years one of the main technological efforts in satellite communications is the integration of digital broadcast services with two-way communications: this is justified by the research of new business perspective and in the increase of technological efficiency.
Traditionally, common air interface (CAI) standards have been rigorously defined in great detail to ensure optimized operation for specific application and to permits the interoperability between the equipment of different manufactures devices. In this context, S ....etc

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