Adaptive Iterative Detection for Turbo Codes with Carrier-phase Uncertainty
نویسندگان
چکیده
In this paper, the problem of adaptive iterative detection for Parallel Concatenated Convolutional Codes (PCCCs or turbo codes) in the presence of carrierphase uncertainty is examined. In particular, a subclass of adaptive iterative receivers, based on the Adaptive Soft-Input Soft-Output (A-SISO) algorithms proposed in [1], [2], is presented. Several design options are proposed and compared and the impact of parametric uncertainty on previously established results for iterative detection with perfect Channel State Information (CSI) is assessed.
منابع مشابه
Adaptive iterative detection for phase tracking in turbo-coded systems
The problem of performing iterative detection (ID)—a technique originally introduced for the decoding of turbo codes—for systems having parametric uncertainty has received relatively little attention in the open literature. In this paper, the problem of adaptive ID (AID) for serial and parallel concatenated convolutional codes (SCCC’s and PCCC’s or turbo codes) in the presence of carrier-phase ...
متن کاملIterative Carrier Phase Synchronization for Coherent Detection of Turbo-Coded Modulations
In this paper, we propose an iterative carrier phase estimation algorithm suited for coherent detection of a turbo-coded 16-QAM modulation. The estimator is based on a Maximum Likelihood (ML) approach, and unlike previously published work, makes iterative use of soft decisions provided by the soft-in soft-out decoders within the overall iterative turbo decoding scheme. In doing so, iterative de...
متن کاملTurbo Trellis Coded Modulation (TTCM) with Imperfect Phase Reference Faz Bozulmalý Ortamlarda Turbo Kafes Kodlamalý Sistemler
ABSTRACT In this paper, we investigate the performance of Turbo Trellis Coded Modulation (TTCM) over AWGN, and Rician channels and assume that phase disturbance is available. As we know Turbo Trellis Coded Modulation (TTCM) is similer to binary turbo codes, but employs Trellis Coded Modulation (TCM) codes which include multi-dimensional codes. The combination of turbo codes with trellis codes l...
متن کاملNoncoherent turbo decoding
In this paper, we propose a new Turbo code noncoherent detection scheme based on a novel a-priori probability processor (APP). Using this method, many turbo encoders can be used without a change in the code or in the modulation, and without a significant change in the structure of the iterative decoder. Simulation results of this method are presented for various phase noise levels. We show a de...
متن کاملAn approach to fault detection and correction in design of systems using of Turbo codes
We present an approach to design of fault tolerant computing systems. In this paper, a technique is employed that enable the combination of several codes, in order to obtain flexibility in the design of error correcting codes. Code combining techniques are very effective, which one of these codes are turbo codes. The Algorithm-based fault tolerance techniques that to detect errors rely on the c...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 1999