Title :
Turbo-code performance with imperfect carrier synchronization
Author :
Kinman, Peter W. ; Shambayati, Shervin ; Tadjpour, Layla ; Berner, Jeff B.
Author_Institution :
Dept. of EECS, Case Western Reserve Univ., Cleveland, OH, USA
Abstract :
The threshold performance of deep-space telemetry is characterized for four turbo codes. The mathematical models given here are based on simulations that account for imperfect carrier synchronization. These models are valid for coherent detection of binary phase-shift keyed (BPSK) telemetry when the carrier synchronization is based on either a residual-carrier loop or a (suppressed-carrier) Costas loop. The required Eb/N0 depends on the code, the threshold frame error rate, the bit rate, and the signal-to-noise ratio and bandwidth of the carrier synchronization loop. For residual-carrier tracking, these mathematical models are used to calculate the optimum modulation index.
Keywords :
phase shift keying; space telemetry; synchronisation; telecommunication; turbo codes; Costas loop; binary phase-shift keyed; carrier synchronization; deep-space telemetry; modulation index; residual-carrier loop; residual-carrier tracking; synchronization loop; turbo codes; turbo-code performance; Bandwidth; Binary phase shift keying; Bit rate; Error analysis; Mathematical model; Modulation; Phase detection; Signal to noise ratio; Telemetry; Turbo codes;
Conference_Titel :
Aerospace Conference, 2004. Proceedings. 2004 IEEE
Print_ISBN :
0-7803-8155-6
DOI :
10.1109/AERO.2004.1367925
