As shown in teh figure below tdscdma physical layer transmitter covers following modules through which information from layer2 traverses. The physical layer is expected to perform the following functions in order to provide the data transport service. The physical layer structures wcdma umts naturally relate to radio interface when observing a single link between a terminal station and a base station. Note the modem implementation presented in this paper only includes the physical layer assuming higher layers e. The physical layer offers different transport channels to mac. Physical layer provides its services to datalink layer. This video talks about lte physical layer and lte air interface. Summary this chapter describes the wideband code division multiple access wcdma. Wcdma will dominate long term, but cdma2000 has a high rate, 3 mbps, dl extension 1x evdo in operation now sprint and verizon in us, kddi in japan using it customers like high speed docomo, vodafone japan and cingularawe us, wcdma operators, are nervous resultant push for high speed downlink packet access enhancement. Physical layer standard for cdma2000 spread spectrum systems.
The main features provided by wcdma physical layer are. The access to these services is through the use of transport channels via the mac sub layer. A comprehensive guide to 5g technology, applications and potential for the future. Umts tutorial umts channels measurements phy layer tdd vs fdd phy rrc states security cell search bands uarfcn frame the page covers difference between wcdma tdd physical layer vs wcdma fdd physical layer as per utra physical layer specifications. The wcdma concept was formed around the wcdma proposals from framesfma2 future radio wideband multiple access system, eu research project, jujitsu, nec and panasonic.
Several european, japanese and us companies contributed to the development of the wcdma concept. Channelization or spreading code to reach channel rate of 3. Spreading and scrambling transport channel combining soft handover compressed mode power control. Wcdma physical layer 3 g forward error correction free.
It continues to provide updated descriptions of the 3gpp standard including the physical layer, radio protocols on layers and a system architecture description. Rfmx wcdma is an application software that provides simple access to advanced optimization techniques such as multimeasurement parallelism and multidut measurements. The umts physical layer model consists of an endtoend transmittertoreceiver simulation of the frequency division duplex fdd downlink physical layer for several dedicated channels dch as specified by the 3gpp standard release 99. A series of wcdma nodebs is offered by huawei accor ding to the 3gpp r99r4 fdd protocols. Wireless wireless curriculum curriculum development development section section introduction. Aug 19, 2009 wideband code division multiple access wcdma is the physical layer used for universal terrestrial radio access utra fdd mode. Wideband cdma has a bandwidth of 5 mhz with high speed data. Congestion control in wcdma with respect to different service classes.
Chockalingam dept of ece, iisc, bangalore radio interface protocol model phy mac rlc. Spreading spreading of the lowbandwidth data signal to produce the wideband cdma signal consists of two steps. This page describes utra physical layer or tdscdma physical layer as per tdd mode. System architecture for 3gpp lte modem using a programmable. Possibility of fast rate change every 10 ms support of fast power control. Rfmx wcdma is an optimized api for performing physical layer measurements on wcdma cellular standard signals. Wcdma channel the physical layer that is used in the paired frequency. The radio interface is composed of layers 1, 2 and 3. The five physical channels are either of type dedicated or common. In the uplink, it can only separate the physical channelsservices of one user because the. Lte physicallayer overview peter wang january, 16, 2011 2. The access to these services is through the use of transport channels via the mac sublayer. Wideband code division multiple access wcdma is the physical layer used for universal terrestrial radio access utra fdd mode. I have actually debugged the file mr alex rodriguez has uploaded in the fex.
Radio access for third generation mobile communications harri holma. Wcdmaumts utra fdd physical layer description of physical layer the radio access for umts is known as universal terrestrial radio access utra. Pdf wcdma system standardization, interfaces and power. Pdf wcdma physical layer chapter 6 alapan chakraborty. Overview of the 3gpp long term evolution physical layer 1 1 introduction the 3gpp long term evolution lte represents a major advance in cellular technology.
Chockalingam dept of ece, iisc, bangalore tfi and tfci transmitter transport chl 1 transport chl 2 transport block transport block transport block transport block tfi tfi tfci coding and multiplexing physical layer higher layer dpcch qchl dpdch ichl physical control chl physical data chl e. Characterised by features of fast power control, fast data rate change on. The physical layer layer 1 sits at the bottom of the open systems interconnect osi model,and is designed to transmit bit streams using electric signals,lights, or radio transmissions. As shown in teh figure below tdscdma physical layer transmitter covers following modules through which information from layer 2 traverses. Wcdma system standardization, interfaces and power control. This data is exchanged between the higher layers and the physical layer in the form of transport channels. Umtswcdma physical layer technical overview syed ismail. Physical layer wcdma for umts wiley online library. The physical layer of the wcdma uplink was adopted mainly from. In the physical layer, we have to describe the transfer channels and physical channels, spreading and scrambling, modulation and power control.
Wcdma spreading and modulation stanford university. The italicized physical channels are not supported by the ads uplink source. The wcdma technology provides the umts system some of the new functionalities on the air interface. Channel structure network layer call control, mobility management radio resource management lac layer mac layer physical layer physical channels to another radio interface zeon pdf driver trial tw transport channels. Lte physical layer fundamentals and test requirements. Sfn is independent of the ue contexts, but associated with the radio link.
Umts rel 99 physical layer simulation file exchange. Lte is designed to meet carrier needs for highspeed data and media transport as well as highcapacity voice support well into the next decade. Agenda the gs brief history of wireless standards organizations 3gpp, itu, gcf, ptcrb introduction to lte ofdma, scofdm. Wcdmaumts wcdmaumtsutrafdd physical layer description. Instead of assigning specific frequencies or time slots to each user, the systems users are distinguished by assigning codes.
Sfn is the frame number used by the physical layer. Wcdma for umts radio access for third generation mobile communication. For reference, the uplink physical channels are set out in table 26. An rmc specifies how to code the user data from the transport layer and how to transmit them on the physical layer fig 2. The present document describes spreading and modulation for utra physical layer fdd mode. It has explained following topics in the same order as given below. Efficient rtk positioning by integrating virtual reference.
Physical layer standard for cdma2000 spread spectrum systems revision d copyright 3gpp2 and its organizational partners claim in this document and individual organizational partners may and issue documents or standards publications in individual organizational partners name based on this document. The phy provides transport channels for the transmission of layer 2 data and control information and maps them onto corresponding physical channels. The physical layer parameters set by utran may vary between control and data. Physical layer standard for cdma2000 spread spectrum. The physical layer combines the tfi to tfci in the physical. Huawei can offer various customized solutions of the w cdma radio access network according to the different re quirements and actual conditions of operators, to achiev. The physical layer 48 interfaces the medium access control mac sub layer of layer 2 and the radio resource control rrc layer 49 of layer 3. Matlab code for wcdma physical layer in 3gpp standard.
The wcdma technology provides the umts system some of the new. Overview of the 3gpp long term evolution physical layer. For uplink transmission five different physical channels are defined. This layer defines the hardware equipment, cabling, wiring, frequencies, pulses used to represent binary signals etc. A comprehensive analysis of the lte physical layer fahimeh rezaei, m. The physical layer is in charge of providing transport support to the data generated at higher layers. Pdf wcdma system standardization, interfaces and power control. At the transport layer, the data consists of the dtch and the dcch. Physical layer comparative study of wcdma and lte by. The physical layer combines the tfi to tfci in the physical control channel, the exception to this is the use of blind transport format detection btfd for every 10ms decode the tfci. Dec 06, 2019 a comprehensive guide to 5g technology, applications and potential for the future. This supports the idea of using the wcdma cells with the rtkvrc system. Wcdma tdd physical layer vs wcdma fdd physical layer utra. The physical layer structures wcdmaumts naturally relate to radio interface when observing a single link between a terminal station and a base station.
Nov 20, 2011 chockalingam dept of ece, iisc, bangalore tfi and tfci transmitter transport chl 1 transport chl 2 transport block transport block transport block transport block tfi tfi tfci coding and multiplexing physical layer higher layer dpcch qchl dpdch ichl physical control chl physical data chl e. The rrc layer maintains the mapping between cfn and various for each rl sfns. In any case of existing or perceived difference in contents between such versions, the reference version is the portable document format pdf. Spreading and scrambling transport channel combining soft handover compressed mode power. Symbol repetition makes symbol streams at different rates adapted to those at the rate of 19. Physical layer general description 3 definitions, symbols and abbreviations. It is a complete set of specifications in which a detailed protocol defines how a mobile phone communicates with the base station or nodeb. The design files of the source components and their associated subcomponents are set out ads designs. Wcdma physical layer free download as powerpoint presentation.
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