Turbo Equalization of Gmsk Signals Using Limiter-discriminator

نویسندگان

  • T. Okada
  • Y. Iwanami
چکیده

Sequence estimation (SE) of narrow-band digital FM signals, such as GMSK or CPFSK, with noncoherent limiter/ discriminator (L/D) and post-lowpass filter detection, was investigated in [1]-[3]. This paper proposes a novel Turbo equalization scheme of GMSK signals, where the iterative decoding between the inner ISI decoder and the outer Recursive Systematic Convolutional (RSC) decoder has been done using MAP algorithm with soft input and output (SISO).

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Sequence Estimation Scheme of Narrowband Digital FM Signals using Limiter-Discriminator Detection with SOVA

The sequence estimation scheme of narrowband-IFfiltered digital FM signals like GMSK and CPFSK with noncoherent Limiter Discriminator detection with Integrate & Dump filter has been reported previously by the same author. In this paper we have applied Soft Output Viterbi Algorithm (SOVA) to the sequence estimation scheme to further utilize the Log Likelihood Ratio (LLR) of the decoded bit. Usin...

متن کامل

Turbo equalization for GMSK signaling over multipath channels

A novel receiver is derived for Gaussianminimum shift keying (GMSK) signals through a multipath channel. A nonlinear signal model is derived which avoids the linear approximation in the conventional finite impulse response(FIR) system model. A Bayesian equalizer based on the Gibbs sampler, a Markov chain Monte Carlo (MCMC) procedure, is developed for joint channel estimation and symbol detectio...

متن کامل

Analysis of BER on Sequence Estimation for Digital FM and GMSK with Limiter Discriminator Detection

Fig.1 System block diagram of sequence estimation scheme for narrowband digital FM signals Abstract The sequence estimation scheme using very narrowband IF filter for digital FM signals with Limiter Discriminator (L&D) and Integrate & Dump (I&D) filter has been reported through [1] to [3]. In those papers simulation results were mainly described and 3.1 dB gain for Continuous Phase FSK (CPFSK) ...

متن کامل

Robust GMSK Demodulation Using Demodulator Diversity and BER Estimation

This research investigates robust demodulation of Gaussian Minimum Shift Keying (GMSK) signals, using demodulator diversity and real-time bit-error-rate (BER) estimation. GMSK is particularly important because of its use in prominent wireless standards around the world (GSM, DECT, CDPD, DCS1800, and PCS1900). The dissertation begins with a literature review of GMSK demodulation techniques (cohe...

متن کامل

Differential Detection of Correlative Encoded Continuous Phase Modulation Sche1\1es Using Decision Feedback

In this paper, we generalize a differential detection technique, which was introduced in [1] for a Gaussian Minimum Shift Keying (GMSK) scheme, to include any Correlative Encoded Continous Phase Modulated (CECPM) signalling format. Similarly to [1], the proposed symbol-by-symbol receivers employ decision feedback to partially remove the effects of the destructive Inter-Symbol-Interference (lSI)...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2001