Sfn is independent of the ue contexts, but associated with the radio link. There are two types of frame structure in the lte standard, type 1 and type 2. This page describes utra physical layer or tdscdma physical layer as per tdd mode. High speed packet access hspa technology syed ismail. Lte physical layer fundamentals and test requirements fanny mlinarsky octoscope.
The design files of the source components and their associated subcomponents are set out ads designs. The node b denotes the base station bs in a umts network. The physical layer is expected to perform the following functions in order to provide the data transport service. Release a primarily provides signaling support for spreading rate 3 and for a new set of common channels. The physical layer parameters set by utran may vary between control and data. The two signals, carrying the physical layer identity and the physical layer cell identity group, are the primary and the secondary synchronization signals respectively. The italicized physical channels are not supported by the ads uplink source. Pdf wcdma physical layer chapter 6 alapan chakraborty.
One of the chief elements of the umts physical layer or radio interface is the signal format that has been adopted. 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. Type 1 uses frequency division duplexing uplink and downlink separated by frequency, and tdd uses time division duplexing uplink and downlink separated in time. The physical layer is in charge of providing transport support to the data generated at higher layers. The present application is a continuationinpart of application ser. The five physical channels are either of type dedicated or common. Physical layer standard for cdma2000 spread spectrum systems. Wcdma spreading and modulation stanford university. Umtswcdma physical layer technical overview syed ismail. The technology needed to tackle the challenges to make these services available is. In the link layer, there are several rlc blocks, indicating the multiplicity of actions that can simultaneously take place in a 3g mobile. Physical layer standard for cdma2000 spread spectrum.
The wcdma concept was formed around the wcdma proposals from framesfma2 future radio wideband multiple access system, eu research project, jujitsu, nec and panasonic. In case of dispute, the reference shall be the printing on etsi printers of the pdf version kept on a specific network. Wcdma for umts radio access for third generation mobile communications third edition edited by harri holma and antti toskala both of nokia, finland. Cell search and cell selection in umts lte application note. Wcdma tdd physical layer vs wcdma fdd physical layer utra. The wimax physical layer is based on orthogonal frequency division multiplexing.
Ofdm is the transmission scheme of choice to enable highspeed data, video, and multimedia communications and is used by a variety of commercial broadband systems, including dsl, wifi, digital video broadcasthandheld dvbh, and mediaflo, besides wimax. 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. It basically performs the physical layer operations such as channel coding, interleaving, modulation. This chapter presents coverage and capacity results and investigates the impact of the radio propagation environment, advanced base station node b solutions, and wcdma physical layer parameters. The present document describes spreading and modulation for utra physical layer fdd mode. The umts physical layer utilises direct sequence spread spectrum format to enable a multiple access scheme.
Lte physical layer fundamentals and test requirements. As shown in teh figure below tdscdma physical layer transmitter covers following modules through which information from layer 2 traverses. Release 0 provides the signaling support for spreading rate 1 using the tiaeia95 common channels. Physical layer performance wcdma for umts wiley online. Spreading and scrambling transport channel combining soft handover compressed mode power. Performance analysis of the wcdma endtoend physical layer.
The rrc layer maintains the mapping between cfn and various for each rl sfns. 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. The access to these services is through the use of transport channels via the mac sub layer. Mar 01, 2012 this book focuses on lte with full updates including lteadvanced to provide a complete picture of the lte system. 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. Wcdmahspa basics for umts kari aho project and business development manager kari.
Us6678249b2 physical layer packet retransmission handling. Remove this presentation flag as inappropriate i dont like this i like this remember as a favorite. 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. February, 28th 2005 overview in this document i make a study of third mobiles generation systems. In this paper, the performance analysis of a wcdma endtoend physical layer has been achieved. For cpch, mac may indicate the asc associated with the pdu to the physical layer. Markov models for the physical layer block error process in a. Wcdma refers to the fdd physical layer and the protocols that support it. Aug 19, 2009 wideband code division multiple access wcdma is the physical layer used for universal terrestrial radio access utra fdd mode. Several european, japanese and us companies contributed to the development of the wcdma concept. Ppt wcdma physical layer design powerpoint presentation. Lte physical layer which in itself is a very large and featurerich topic, particularly as there are different modes of operation fddtdd and different downlink and uplink access technologies ofdma, scfdma, along with.
The wcdma technology provides the umts system some of the new functionalities on the air interface. This book builds a bridge between the theory and practice in the. Sfn is the frame number used by the physical layer. 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. The adobe flash plugin is needed to view this content. This tutorial section on wcdma umts basics covers following sub topics. This is to ensure that rach and cpch messages associated with a given access service class asc are sent on the appropriate signatures and time slots. At first i will center the study in the objectives and main characteristic of this generation. For uplink transmission five different physical channels are defined.
Wcdma physical layer free download as powerpoint presentation. Symbol repetition makes symbol streams at different rates adapted to those at the rate of 19. Service provided to higher layer the physical layer offers data transport services to higher layers. The goal for the next generation of mobile communications system is to seamlessly integrate a wide variety of communication services such as high speed data, video and multimedia traffic as. The advanced base station solutions include both baseband and antenna techniques. Overview and detailed explanations are given for the latest lte standards for radio interface architecture, the physical layer, access procedures, broadcast, relaying, spectrum and rf characteristics, and system performance. Physical layer wcdma for umts wiley online library. Spreading and scrambling transport channel combining soft handover compressed mode power control.
Performance analysis of the wcdma endtoend physical layer article in international journal of engineering and technology 512. A joint effort from the research and academia communities has generated a signi. Ppt wcdma physical layer design powerpoint presentation free to view id. Lte physicallayer overview peter wang january, 16, 2011 2. The cdma2000 standard includes a large number of speci. Channelization or spreading code to reach channel rate of 3. Wcdma is a third generation mobile communication system that uses cdma technology over a wide frequency band to provide highspeed multimedia and efficient voice services. Physical layer general description 3 definitions, symbols and abbreviations. Pdf performance analysis of the wcdma endtoend physical. Now in its fifth edition, the bestselling book on umts has been updated to cover 3gpp wcdma and high speed packet access hspa from release 99 to release 9. Mac also applies the appropriate backoff parameters associated with the given asc.
Radio interface protocol architecture around the physical layer. This information is now transmitted using two different signals, generated by layer 1. The physical layer of the wcdma uplink was adopted mainly from. This data is exchanged between the higher layers and the physical layer in the form of transport channels. Wideband code division multiple access wcdma is the physical layer used for universal terrestrial radio access utra fdd mode. 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. After getting strong concept of umts radio architecture and procedures, we worked on different rrm techniques and in. The goal for the next generation of mobile communications system is to seamlessly integrate a wide variety of communication services such as high speed data, video and multimedia traffic as well as voice signals. There can be up to eight transport channels processed simultaneously.
Overview of the 3gpp long term evolution physical layer. Utran umts terrestrial radio access network handles all radio. Lte is designed to meet carrier needs for highspeed data and media transport as well as highcapacity voice support well into the next decade. The chapter presents the wcdma physical layer solutions to meet those requirements. The main features provided by wcdma physical layer are. Possibility of fast rate change every 10 ms support of fast power control.
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