hsdpahsupa for umts high speed radio access for mobile communications download

... reasons for i-mode's relative (and absolute) success, for example: • Low PC penetration in Japan (for cultural reasons) • High charges for PSTN dial-up access in Japan • The Japanese enthusiasm for ... the influential UMTS forum report (www.umts-forum.org) covering all non- standardisation aspects in UMTS such as regulation, market needs and spectrum requirements As far as UMTS standardisation ... reason was the requirement for GSM to UMTS handover, recognising that UMTS coverage will be limited in the early years of roll-out The radio access network for UMTS was also new, supporting certain

Ngày tải lên: 27/10/2013, 17:15

... 1.1.2 Second Generation (2G) Mobile Communications 9 1.1.3 Third Generation Mobile Communications 15 1.1.4 Beyond Third Generation Mobile Communications 19 1.2 Mobile Propagation Channel ... 181 Trang 8In digital communications, especially for mobile communications, adaptive signalprocessing techniques are widely used to improve the system performance For ex-ample, adaptive equalization ... chapter will ¯rst review the evolution of mobile lular communications highlighting the interest to search for ways to enhance sys-tem performance in a mobile propagation environment and hence

Ngày tải lên: 17/09/2015, 17:18

... third-generation systems in order to provide high-capacity flexible services REFERENCES [1] H Holma and A Toskala, Eds., WCDMA for UMTS-Radio Ac-cess for Third Generation Mobile Communications, John Wiley & ... (2002-03), “High Speed Downlink Packet Access: Physical layer aspects, (Release 5)” [3] B Sayadi and I Fijalkow, “Joint detection for multicode trans-mission in downlink high speed UMTS,” in Proceedings ... for a multimedia CDMA wireless system,” in Proceedings of 6th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, Wire-less: Merging onto the Information Superhighway

Ngày tải lên: 22/06/2014, 22:20

... overall performance 6 CONCLUSIONS Broadband access raises new demands for channel coding Besides higher decoding speed and decoding capability, re-configurable decoding performance is highly desired, ... of ACS units increases Therefore, such architectures would only be possi-ble for broadband access performance if their design space is explored in terms of maximum speedup (pipelining) versus ... Communications, vol 41, no 5, pp. 802–807, 1993 [3] M B ´oo, F Arg¨uello, J D Bruguera, R Doallo, and E L Za-pata, “High-performance VLSI architecture for the Viterbi algorithm,” IEEE Trans Communications,

Ngày tải lên: 23/06/2014, 01:20

... % and 41 % The highest efficiency is obtained at high mobile speedwith high data rate 384 kbps The fast power control cannot keep the received power levelexactly constant at high speed and there ... Interference between mobiles, between base stations, and between mobile and base station Trang 2413.3.1.1 Mobile Station to Mobile Station InterferenceMobile-to-mobile interference occurs if mobile MS2 ... Solutions for UMTS High Bit Rate Services’, Proceedings of PIMRC’97, Helsinki, Finland, September 1997, pp 22–26 [9] Ojanpera¨, T and Prasad, R., Wideband CDMA for Third Generation Mobile Communications,Artech

Ngày tải lên: 14/08/2014, 12:21

... Universal Mobile Telecommunications System (UMTS), Requirements for the UMTS TerrestrialRadio Access System (UTRA), ETSI Technical Report, UMTS 21.01 version 3.0.1, November1997 [6] Universal Mobile ... partners agreed on joint efforts for the standardisation of UTRA, nowstanding for Universal Terrestrial Radio Access, as distinct from UTRA (UMTS TerrestrialRadio Access) from ETSI, also submitted ... Telecommunications System (UMTS), Selection Procedures for the Choice ofRadio Transmission Technologies of the UMTS, ETSI Technical Report, UMTS 30.03 version3.1.0, November 1997 [7] Universal Mobile

Ngày tải lên: 14/08/2014, 12:21

... 0-87096-6 WCDMA for UMTS 150 Control-plane User-plane RRC L3 Control Signalling radio bearers U-Plane radio bearers PDCP BMC RLC L2... idle Depending on WCDMA for UMTS 132 40 96 ... here For example, the support for spreading factor 512 is not expected to be covered by any of the classes by default For the channel... Int Conf on Personal Indoor and Mobile Radio Communications, ... converge before the actual data transmission starts. The higher layer downlink signalling to a terminal using uplink CPCH is provided by the Forward Access Channel (FACH). The main reason for not

Ngày tải lên: 14/08/2014, 12:21

... the UMTS Radio Access Network (UTRAN) toovercome early User Equipment (UE) implementation faults.’ [18] 3GPP TR 25.995: ‘Measures employed by the UMTS Radio Access Network (UTRAN) to caterfor ... another radio access system (e.g GSM)
Inter-system cell reselection between UTRAN and another radio access system (e.g.GPRS)
Inter-system cell change order between UTRAN and another radio access ... keys can be used simultaneously for one UE – one for the PSdomain services and one for the CS domain services For the signalling (that uses commonRadio Bearer(s) for both CN domains) the newer

Ngày tải lên: 14/08/2014, 12:21

... like CPICH measurements for the neighbourlistoptimisation Table 8.18 The coverage probability results Test mobile speed: Test mobile speed: Test mobile speed: Trang 5The radio network can typically ... and themobile station speed, on network performance It is shown that the lower mobile stationspeed provides better capacity: the number of mobile stations served and the cell throughputare higher ... Prasad, R., Wideband CDMA for Third Generation Mobile Communications,Artech House, 1998 [3] Laiho, J., Wacker, A and Novosad, T., Radio Network Planning and Optimisation for UMTS, JohnWiley &

Ngày tải lên: 14/08/2014, 12:21

... Trang 1High-speed Downlink Packet Access Antti Toskala, Harri Holma, Troels Kolding, Preben Mogensen, Klaus Pedersen and Karri Ranta-aho This chapter presents High-speed Downlink Packet Access ... the highest rate used for theAMR speech and the highest rate allowed to be sent simultaneously with full rate AMR Thiscan be used even up to 2 Mbps, but reserving the code tree for a very high ... Uplink High-speed Dedicated Physical Control Channel (HS-DPCCH) The uplink direction has to carry both ACK/NACK information for the physical layerretransmissions and the quality feedback information

Ngày tải lên: 14/08/2014, 12:21

... best performance is obtained for high mobilespeeds, while close to the base station, low mobile speeds perform better This behaviour can be explained by the fact that for high mobile speeds interleaving ... It can be observed that the gain is higher at low mobile speeds of 3 km/h and 20 km/h than for 120 km/h The reason is that for high mobile speeds the link performance benefits from time Polarisation ... receivers or equalisers in the mobile Suchreceivers are discussed in Chapter 11 for High Speed Downlink Packet Access, HSDPA.The effect of the mobile speed on downlink performance in the Pedestrian

Ngày tải lên: 14/08/2014, 12:21

... low-complexity MIMO symbol detector with close-Maximum a posteriori performance for the emerging multiantenna enhanced high-speed wireless communications The VLSI implementation is based on a novel MIMO ... fixed complexity and parallelism for hard decision In [5], a low-complexity near-MAP detection method is proposed for high-order modulation (e.g., 64-QAM) The performance loss from MAP due to the ... of a complexity reduced K-best detector for 2×2 MIMO and 16-QAM is presented for WiMAX/WiFi In [7], VLSI implementation of a soft-output MIMO detector for 2 × 2 MIMO in WLAN is presented Without

Ngày tải lên: 21/06/2014, 17:20

... rates higher than or equal toR f are categorized as high-rate sta-tions, thus granted proportional temporal share in that the access time is roughly proportional to the current data rate For low-rate ... pa-rameters, and contend for the channel access Once a station succeeds in contention, adaptive batch transmission allows for the station to transmit multiple concatenated packets for a period equal ... analyze the scalable performance ob-tained by TMAC in high-speed wireless LANs, under various user populations We first characterize the overall network throughput performance in TMAC, then analytically

Ngày tải lên: 22/06/2014, 19:20

... a radio frequency (RF) band for transmission Zipper DMT (z-DMT) is the latest version of DMT that has been proposed as an effective frequency-division duplex-ing (FDD) method for very-high-speed ... viable tech-nology for high-speed data transmission over spectrally shaped noisy channels [1 6] The most popular MCM tech-nique uses the properties of the discrete Fourier transform (DFT) in an ... per-formance and complexity Moreover, for a given pair ofM andm, the system performance is affected by the choice of the CMFB prototype filter An important parameter that af-fects the performance

Ngày tải lên: 22/06/2014, 23:20

... it may be necessary for IMT-Advanced to have different radio interfaces and frequency bands for mobile access for highlymobile users and for new nomadic/local area wireless access One of the strong ... USB), • 802.16 Broadband Wireless Access (WiMax, Mobile WiMax/WiBro), • 802.20 Mobile Broadband Wireless Access (suspended until 1 October 2006), etc. For more information about IEEE and 802 LAN/MAN ... this chapter we discuss the aforesaid mobile communication generations indetail and describe the services and applications suitable for mobile communicationsystems For a better understanding of

Ngày tải lên: 27/06/2014, 09:20

... promising broadband access as MC-CDMA for 4G wireless networks Although MMSE-FDE can significantly improve the BER performance oforthogonal multicode SC-CDMA, there is still a big performance gap to ... literature.Similar to ISI cancellation for MC-CDMA, ICI cancellation for SC-CDMA can becarried out either in the time-domain or in the frequency-domain after performingMMSE-FDE For the frequency-domain ICI ... Laboratories layeredspace-time architecture (V-BLAST) For high-speed data transmissions, thechannels become severely frequency-selective and the BER performance ofSC-CDMA using SDM degrades due to the

Ngày tải lên: 07/08/2014, 21:20

... Garg and F Adachi, “DS-CDMA with frequency-domain equalization for high speed downlink packet access,” Journal on Selected Areas in Communications, Vol 24, No 1, pp 161–170, Jan 2006. [49] D Garg ... we intend to support much higher data transmission than this, such as in future 121 Y Park and F Adachi (eds.), Enhanced Radio Access Technologies for Next Generation Mobile Communication, 121–150. ... frequency-selective fading, theMMSE-FDE has a better performance REFERENCES [1] F Adachi, M Sawahashi, and H Suda, “Wideband DS-CDMA for next generation mobile communications systems,” IEEE Commun Mag., Vol

Ngày tải lên: 07/08/2014, 21:20

... stands for ”Evolution, Data-only” 151 Y Park and F Adachi (eds.), Enhanced Radio Access Technologies for Next Generation Mobile Communication, 151–190. © 2007 Springer. Trang 8and delivers forward ... andperforming a series of operations to access the system The information necessaryfor access to the system is received on the paging channel of Forward link Aftersuccessfully accessing the system, the terminal ... Characteristics of Forward Link Channel As shown Figure 1, channels for fast data transmission and control channels for efficient signaling control have been added to the forward link in the

Ngày tải lên: 07/08/2014, 21:20

... America. WCDMA radio access has evolved strongly alongside high- speed downlink packet access (HSDPA) and high- speed uplink packet access (HSUPA), together called high- speed packet access (HSPA). ... High- Speed Downlink Packet Access HSPA High- Speed Packet Access HSUPA High- Speed Uplink Packet Access Abbreviations xvii Higher cell capacity and higher spectral efficiency are required to provide higher ... High- Speed Dedicated Physical Control CHannel HS-DSCH High- Speed Downlink Shared CHannel HS-PDSCH High- Speed Physical Downlink Shared CHannel HS-SCCH High- Speed Shared Control CHannel HSDPA High- Speed...

Ngày tải lên: 01/06/2014, 09:38

... WCDMA FOR UMTS Radio Access for Third Generation Mobile Communications Third Edition Edited by Harri Holma and Antti Toskala Both ... depicts packet access and presents the performance of packet protocols of WCDMA. Chapter 11 presents the significant Release 5 feature, High- Speed Downlink Packet Access, HSDPA, and its perform ance. ... all-IP 10 WCDMA for UMTS guidelines for radio network dimensioning, gives an example of detailed capacity and coverage planning, and covers GSM co-planning. Chapter 9 covers the radio resource management...

Ngày tải lên: 03/06/2014, 01:37