Essays about: "Link-Adaptation"

Showing result 16 - 20 of 22 essays containing the word Link-Adaptation.

  1. 16. Fast Packet Retransmissions in LTE

    University essay from Kommunikationssystem

    Author : Syed Tamoor-ul-Hassan; Serkan Demir; [2011]
    Keywords : Link Adaptation; HARQ; EHF; FTP; VOIP;

    Abstract : The cellular networks are evolving to meet the future requirements of data rate,coverage and capacity. The fourth generation mobile communication system, LTEhas been developed to meet these goals. LTE uses multiple antenna features andlarger bandwidths in order to accomplish this task. READ MORE

  3. 17. Link Adaptation Improvements for Long Term Evolution (LTE)

    University essay from Blekinge Tekniska Högskola/Sektionen för ingenjörsvetenskap

    Author : Chamila Asanka Ariyaratne; [2009]
    Keywords : LTE; Long Term Evolution; link adaptation; Adaptive modulation and coding;

    Abstract : The Long Term Evolution (LTE) link adaptation is based on measured instantaneous Signal to Interference and Noise Ratio (SINR) which is used for selecting Modulation and Coding Scheme (MCS) for transmissions. In addition, depending on the scheduler, SINR may be used to determine which users are scheduled for a certain transmission time interval and on which frequency resources. READ MORE

  4. 18. Uplink Channel Dependent Scheduling for Future Cellular Systems

    University essay from Institutionen för systemteknik

    Author : Kristina Jersenius; [2007]
    Keywords : channel dependent scheduling; uplink; SC-FDMA; channel quality information; 3GPP Long Term Evolution;

    Abstract : One goal in the development of future cellular systems is to increase performance. Channel dependent scheduling can possibly contribute to a performance enhancement. It requires channel qualityinformation and uplink channel knowledge is often incomplete. READ MORE

  5. 19. Frequency Domain Link Adaptation for OFDM-based Cellular Packet Data

    University essay from Institutionen för systemteknik

    Author : Anders Ruberg; [2006]
    Keywords : OFDM; 3G LTE; link adaptation; power allocation;

    Abstract : In order to be competitive with emerging mobile systems and to satisfy the ever growing request for higher data rates, the 3G consortium, 3rd Generation Partnership Project (3GPP), is currently developing concepts for a long term evolution (LTE) of the 3G standard. The LTE-concept at Ericsson is based on Orthogonal Frequency Division Multiplexing (OFDM) as downlink air interface. READ MORE

  6. 20. Implementation and simulation of HSDPA functionality with ns-2

    University essay from Institutionen för systemteknik

    Author : Haichuan Jianqiu Wu Zhao; [2005]
    Keywords : Reglerteknik; UMTS; HSDPA; ns-2; EURANE; HS-DSCH; DCH; Power Consumption; FCDS; Reglerteknik;

    Abstract : Enhanced packet-data access is a trend in third generation mobile communication system. WCDMA Release 5 introduces HSDPA (High Speed Packet Data Access) with a brand new downlink transport channel HS-DSCH (High Speed Downlink Shared Channel) into 3GPP specification to provide greater capacity. READ MORE