What is Wcdma signal?
Bandwidth. 4.2 MHz. Location. Short Description. WCDMA, known primarily as 3G mobile, is a family of 3G data protocols used to send voice, text and signaling data to smart phones and other wireless devices.
What is Dpch Wcdma?
This page describes DPCH or downlink dedicated physical channel with respect to WCDMA/UMTS system. There is only one type of downlink dedicated physical channel, which is known as the Downlink Dedicated Physical Channel (downlink DPCH).
What is the uplink channel?
The “Downlink” refers to a radio link for the transmission of signals from the test set to a UE (mobile station) while the “Uplink” refers to a radio link for the transmission of signals from a UE (mobile station) to the test set.
How many types of channels are there in Wcdma?
UMTS logical channels
| UMTS/WCDMA Logical Channel | Function | Duplex Mode |
|---|---|---|
| Common control channel(CCCH) | It is used to carry control messages | FDD/TDD |
| Common traffic channel(CTCH) | It is used to carry user traffic(e.g.cell broadcast SMS) | FDD/TDD |
| Paging control channel(PCCH) | It is used to carry paging messages directed towards UE | FDD/TDD |
Why is WCDMA used?
WCDMA enables simultaneous voice and data which allows, for example, browsing or email when voice conferencing or video sharing in real time during voice calls. The operators also offer mobile connectivity to the Internet and corporate intranet with maximum bit rate of 384 kbps downlink and both uplink.
What is chip rate in WCDMA?
The basis for the physical layer of WCDMA is spreading of the data to be transmitted to the chip rate corresponding to 3.84 Mchip/s using channelization codes. It is also responsible for coding, transport-channel multiplexing, and modulation of the radio-frequency carrier.
What is downlink channel?
In LTE the Downlink Shared Channel (DL-SCH) is a transport channel used for the transmission of user data, dedicated control and user-specific higher layer information and downlink system information. The Physical Downlink Shared Channel (PDSCH) is the physical channel that carries the DL-SCH coded data.
What does uplink and downlink channel mean?
In satellite telecommunication, a downlink is the link from a satellite down to one or more ground stations or receivers, and an uplink is the link from a ground station up to a satellite. Some companies sell uplink and downlink services to television stations, corporations, and to other telecommunication carriers.
What is LTE subcarrier?
Subcarriers in cellphones, LTE 4G and 5G NR In LTE, each subcarrier is spaced 15 kHz apart. These subcarriers are combined in groups of 12 to form a single resource block. Each resource block is used in an OFDMA arrangement to send data to different handsets or combined for high-speed data.
What is LTE Pucch?
In LTE, data can be transmitted from the eNodeB to the UE via a physical downlink shared channel (PDSCH). A physical uplink control channel (PUCCH) can be used to acknowledge that data was received.