Title :
Pre-repeat selective-repeat ARQ in fading channel
Author :
Nakamura, Osamu ; Matsuki, Hideo ; Oono, Tomoyoshi ; Tanaka, Toshiaki
Author_Institution :
NTT Wireless Syst. Lab., Yokosuka, Japan
Abstract :
A new selective-repeat (SR) ARQ scheme using the pre-repeat (PR) technique is proposed. The proposed scheme is efficient in digital cordless-phone systems employing TDMA-TDD under slow fading environments. Because fading affects both up-link channel and down-link channel simultaneously, the occurrence of error in the up-link channel is closely correlated with that in the down-link channel. This characteristic can be applied to predict errors in transmitted data by observing received signal. In this paper, throughput efficiency of the proposed scheme is investigated by computer simulation, and is compared with conventional SR-ARQ. It indicates that the proposed scheme is advantageous to transmission with a long round-trip delay
Keywords :
Rayleigh channels; automatic repeat request; cordless telephone systems; data communication; delays; digital simulation; error detection; personal communication networks; prediction theory; time division multiple access; DECT; PCS; PHS; Rayleigh fading; TDMA-TDD; computer simulation; conventional SR-ARQ; digital cordless-phone systems; down-link channel; error prediction; fading channel; long round-trip delay; pre-repeat selective-repeat ARQ; received signal; slow fading environments; throughput efficiency; transmitted data; up-link channel; Access protocols; Automatic repeat request; Computer errors; Computer simulation; Data communication; Delay; Error correction; Fading; Strontium; Throughput;
Conference_Titel :
Universal Personal Communications, 1998. ICUPC '98. IEEE 1998 International Conference on
Conference_Location :
Florence
Print_ISBN :
0-7803-5106-1
DOI :
10.1109/ICUPC.1998.733696
