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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More Info About HSDPA-HIGH SPEED DOWNLINK PACKET ACCESS

http://seminarsprojects.net/Thread-high-speed-ofdm-packet-access-hsopa ....etc

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To get full information or details of stratellites please have a look on the pages

http://seminarsprojects.net/Thread-stratellites-full-report

if you again feel trouble on stratellites please reply in that page and ask specific fields in stratellites ....etc

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To get full information or details of components used in stratellites please have a look on the pages

http://slidesharenakkaramu44/ramu-doc

if you again feel trouble on components used in stratellites please reply in that page and ask specific fields in components used in stratellites ....etc

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Wireless communication is simply data communication without the use of landlines. This may involve cellular telephone, two-way radio, fixed wireless (broadband wireless), laser (freespace optics) or satellite communication systems. Mobile wireless technologies are going to act as glue towards bringing together the wired and wireless to share and distribute information seamlessly across each other's areas of reference.

Since from the beginning of wireless communications, there have been a number of developments in each generation. Considering ....etc

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Abstract IEE 802.16 OFDMA systems have gained much attention for their ability to support high transmission rates and broadband access services. For multiuser environments, IEE 802.16 OFDMA systems require a resource allocation algorithm to use the limited downlink resource efficiently. The IEE 802.16 standard defines that resource allocation should be performed with a rectangle region of slots, called a burst. However, the standard does not specify how to construct bursts. In this paper, we propose a heuristic burst construction algorithm, ca ....etc

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Abstract In this paper, the problem of efficient distributed power control via convex pricing of users' transmission power in the uplink of CDMA wireless networks supporting multiple services is addressed. Each user is associated with a nested utility function, which appropriately represents his degree of satisfaction in relation to the expected trade-off between his QoS-aware actual uplink throughput performance and the corresponding power consumption. Initially, a Multiservice Uplink Power Control game (MSUPC) is formulated, where each user ....etc

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i want the block diagram of stratellite and the electronics involved in it ....etc

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uplink and downlink frequency of stratellite

What are uplink and downlink?

The communication going from a satellite to ground is called downlink, and when it is going from ground to a satellite it is called uplink. When an uplink is being received by the spacecraft at the same time a downlink is being received by Earth, the communication is called two-way. If there is only an uplink happening, this communication is called upload. If there is only a downlink happening, the communication is called one-way.

DS1 has a constant downlink going to ....etc

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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 being i ....etc

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