hsdpahsupa for umts high speed radio access for mobile

... 61, and 63 for constraint lengths 7, 8, 9, and 10, respectively. For our FPGA prototype, due to A Novel High- Speed Configurable Viterbi Decoder for Broadband Access 1323 Table 10: Data format in ... 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, ... best possible decoding through- put rate for the area-efficient architecture with 8 ACS in A Novel High- Speed Configurable Viterbi Decoder for Broadband Access 1325 Table 12: Throughput rate and

Ngày tải lên: 23/06/2014, 01:20

... and 41 %. The highest efficiency is obtained at high mobile speed with high data rate 384 kbps. The fast power control cannot keep the received power level exactly constant at high speed and there ... results also in high cross correlation between users, making the performance of Rake poor and hence allowing higher potential gain for SQ-PIC. The lowest gain is obtained at low mobile speed with ... Prasad, R., Wideband CDMA for Third Generation Mobile Communications, Artech House, 1998, 439 [10] Holma, H., ‘A Study of UMTS Terrestrial Radio Access Performance’, Doctoral thesis,

Ngày tải lên: 14/08/2014, 12:21

... required equipment for the remote access service. Another approach uses a VPN connection between the mobile operator core site and the company intranet. The mobile network uses standard UMTS security ... applications can be, for example, web browsing, email access or file download. The application performance should preferably be similar to the performance of DSL or WLAN. The application performance depends ... the WCDMA waveform against interference is clearly compromised The performance of high bit rates with WCDMA is presented in Section 12. 4 Both base stations as well as mobiles for. .. provide

Ngày tải lên: 14/08/2014, 12:21

... partners agreed on joint efforts for the standardisation of UTRA, now standing for Universal Terrestrial Radio Access, as distinct from UTRA (UMTS Terrestrial Radio Access) from ETSI, also submitted ... Mobile Radio Commu- nications, PIMRC’97, Helsinki, Finland, 1–4 September 1997, pp. 42–46. [5] Universal Mobile Telecommunications System (UMTS) , Requirements for the UMTS Terrestrial Radio Access ... Report, UMTS 30.03 version 3.1.0, November 1997. [7] Universal Mobile Telecommunications System (UMTS) , UMTS Terrestrial Radio Access System (UTRA) Concept Evaluation, ETSI Technical Report, UMTS

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 ... 6.7 For the convolutional coding, all the classes have the value of 640 bits at an arbitrary time instant for both Table 6.6 Terminal radio access capability parameter combinations for ... 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

... Requirements for capacity - Requirements for quality - Area type /radio propagation... TR 25. 9 95: ‘Measures employed by the UMTS Radio Access Network (UTRAN) to cater for legacy ... between UE and the other radio access system (e.g GSM/ GPRS), the other radio access system initiates release of the used UTRAN radio resources and UE context information Inter-System ... be used simultaneously for one UE – one for the PS domain services and one for the CS domain services For the signalling (that uses common Radio Bearer(s) for both CN domains) the

Ngày tải lên: 14/08/2014, 12:21

... priorities are targeted for efficient radio utilisation QoS parameters can also be used to differentiate the services for performance monitoring If, for example, MMS,... except for when a block ... real time connection whose bit rate can be decreased by the radio access network is Adaptive Multirate (AMR) speech codec: for further information see Section 2.2. References [1] Sipila ¨ , K., ... while the Internet WCDMA for UMTS, third edition Edited by Harri Holma and Antti Toskala # 2004 John Wiley & Sons, Ltd ISBN: 0- 470 - 870 96-6 WCDMA for UMTS 270 Example service...

Ngày tải lên: 14/08/2014, 12:21

... best performance is obtaine d for high mobile speeds, while close to the base station, low mobile speeds perform better. This behaviour can be explained by the fact that for high mobile speeds ... 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. Such receivers 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

... Hence, the former one is assumed to target high- end users willing to pay more in area and power for performance (e.g., laptops) The MMSE single-mode detector is in favor of low-end users for connectivity ... fixed complexity and parallelism for hard decision In [5], a lowcomplexity near-MAP detection method is proposed for high- order modulation (e.g., 64-QAM) The performance loss from MAP due to the ... always visits the complete constellation (e.g., 16 for 16-QAM and 64 for 64-QAM), while MFCSO only visits a subset of it (e.g., for 16-QAM and 16 for 64-QAM) Note that MFCSO requires MMSE detection

Ngày tải lên: 21/06/2014, 17:20

... compression rate for video signal CBR and VBR stand for constant bit rate and variable bit rate, respectively SIF stands for source input format HalfD1 stands for video size of 352 × 480 pixels for one ... Japan, under the domestic radio regulations, wireless LAN is the only radio equipment with a hightransmission rate permitted to be used without any radiorelated licenses for the operation This allows ... current Japanese regulation for EIRP, (b) an attenuator used with a higher gain antenna DEVELOPMENT OF LONG-RANGE AND HIGH- SPEED WIRELESS LAN UNITS Most of the information provided in this paper

Ngày tải lên: 22/06/2014, 06:20

... quantum dots (QDs) in high- speed vertical-cavity surface-emitting lasers (VCSELs) SML deposition enables controlled formation of high density QD arrays with good size and shape uniformity Further increase ... significant increase of the modulation speed of VCSELs combined with the demands for power, degradation robustness and speed of next generation ultrahigh speed systems require new material and ... faster [4] large signal modulation experiments have been performed at lower temperatures, but the high speed performance at 85 °C is crucial for most short-distance optical interconnect applications

Ngày tải lên: 22/06/2014, 18:20

... parameters, 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 ... mechanism [23] by utilizing RTS/CTS handshake PERFORMANCE ANALYSIS In this section, we analyze the scalable performance obtained by TMAC in high- speed wireless LANs, under various user populations ... input to derive CW in DCF MAC The distributed scheme for adjusting CW will have difficulty in providing scaling performance especially in highspeed wireless LANs First, the distributed scheme derives

Ngày tải lên: 22/06/2014, 19:20

... modulation techniques for very high speed digital subscriber lines,” IEEE Communications Magazine, vol 38, no 5,... “Filtered multitone modulation for very high- speed digital subscriber ... 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 ... per- formance and complexity. Moreover, for a given pair of M and m, 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

... parameters and radio access requirements for WiBro system WiBro adopts OFDMA/TDD for multiple -access and duplex schemes, and aims to provide a high data rate wireless Internet access with ... broadband access standard called WiMax (Worldwide Interoperability for Microwave Access) Formed in April 2001 to promote conformance and interoperability of the standard IEEE 802.16, the WiMax Forum ... we discuss the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION

Ngày tải lên: 27/06/2014, 09:20

... to the application of beamforming... (WiMax, Mobile WiMax/WiBro), • 802.20 Mobile Broadband Wireless Access (suspended until 1 October 2006), etc For more information about IEEE and 802 ... we discuss the aforesaid mobile communication generations in detail and describe the services and applications suitable for mobile communication systems 2 EVOLUTION OF MOBILE COMMUNICATION ... professional mobile radio system Owing to the technical and commercial success of the GSM, this body plays an important role in the development of 3G mobile systems See http://www.etsi.org/ for

Ngày tải lên: 07/08/2014, 21:20

... necessary for IMT-Advanced to have different radio interfaces and frequency bands for mobile access for highly mobile users and for new nomadic/local area wireless access One ... MHz Multiple Access OFDMA/TDD OFDMA/FDD, TDD;SC-FDMA, OFDMA/FDD, TDD OFDMA, MC-CDMA, ??? Service Portable Internet/ High- speed Wireless Internet High- speed mobile service High- speed mobile service ... parameters and radio access requirements for WiBro system. WiBro adopts OFDMA/TDD for multiple -access and duplex schemes, and aims to provide a high data rate wireless Internet access with PSS

Ngày tải lên: 07/08/2014, 21:20

... wk = ⎧ ⎪ ⎪ ⎪ ⎪ ⎪ ⎨ ⎪ ⎪ ⎪ ⎪ ⎪ ⎩ H ∗ k for MRC H ∗ k   Hk  2 for ZF H ∗ k   Hk  for EGC H ∗ k   Hk  2 +  C SF E s N 0  −1  for MMSE where E s /N 0 (=E c SF/N 0  is ... Similar to ISI cancellation for MC-CDMA, ICI cancellation for SC-CDMA can be carried out either in the time-domain or in the frequency-domain after performing MMSE-FDE. For the frequency-domain ... obtained in SC-CDMA Therefore, 2D block spread SC-CDMA provides much better BER performance than MC-CDMA 8 HYBRID... 1) The LLR values are computed for c = 0 ∼ C − 1 and for all the bits in the

Ngày tải lên: 07/08/2014, 21:20

... of WCDMA radio access technologies such as HSDPA (High- speed Downlink Packet Access) , HSUPA (High- speed Uplink Packet Access) , which is an enhanced uplink scheme,... used for scrambling ... for the transmission of higher-level data, control information, and power control information from a base station to a mobile station Forward Power Control Subchannel A subchannel on the Forward... ... for the transmission of digital control information from a base station to one or more mobile stations Forward Dedicated Control Channel A portion of a Radio Configuration 3 through 9 Forward

Ngày tải lên: 07/08/2014, 21:20

... physical-layer channels for the Evolved UTRA (UMTS Terrestrial Radio Access, UMTS: Universal Mobile Telecommunications System) and UTRAN (UMTS Terrestrial Radio Access Network), which ... Evolved UTRA (UMTS Terrestrial Radio Access, UMTS: Universal Mobile Telecommunications System) and UTRAN (UMTS Terrestrial Radio Access Network)... poweramplifier efficiency for a given ... THE WCDMA RADIO ACCESS TECHNOLOGY 203 3. HSUPA – HIGH SPEED UPLINK PACKET ACCESS (“ENHANCED UPLINK”) Enhanced Uplink, also sometimes referred to as HSUPA or High Speed Uplink Packet Access, was

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