English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

To improve drawback of existing modulation method, in this paper, we propose the channel forecastmethod using adaptive modulation which can improve throughput of channel. This method adaptively changes modulation method to the change of channel environments. In proposed method, channel's characteristics are measured in realtime to determine code rate to the changes of demanded channel's bit error rate. If bit error rate is increased, this method reduce code rate to maintain maximum throughput. We analysis performance of proposed method by Matlab. Key Words : QPSK, Auto repeat request, Forward error correction   2010     *  : (djcho@andong.ac.kr) 10 12 07  (1 11 01 17, 2 11 01 28)  11 02 10 1.           .  , ,     ,          .    QPSK               .              .                    .        (BER)                  ,    (FEC: Forward Error Correction)[1]   ARQ(Auto Repeat Request) [2] .    .  2       , 3             , 4  .

Analysis of Mobile System using Adaptive Modulation Method by Channel Forecast