Performance of trellis-coded direct-sequence spread spectrum with noncoherent reception in a fading environment
نویسندگان
چکیده
منابع مشابه
Performance of Trellis-Coded Direct-Sequence Spread Spectrum with Noncoherent Reception in a Fading Environment
In this paper, we consider the performance of different coding schemes for direct-sequence spread spectrum (DS-SS) in a nonselective Rician faded channel. The Nordstrom–Robinson (NR) code, a nonlinear code that has large distance for a given rate combined with a trellis code, is examined. A bound is developed on the error probability for this trellis-coded NR (TCNR) code with noncoherent recept...
متن کاملPERFORMANCE OF TRELLIS CODED DIRECT - SEQUENCESPREAD - SPECTRUM MULTIPLE - ACCESS WITH NONCOHERENTRECEPTION IN A FADING ENVIRONMENTVictor
In this paper the performance of diierent coding schemes for direct-sequence spread-spectrum (DS-SS) with multiple-access (MA) interference in a nonselective Rayleigh fading channel is considered. A conventional 64-ary orthogonal code (M 64) transmitting 6 bits of information is examined rst. Each of the 64 code symbols in the M 64 code is assumed to be spread by a random sequence of length N, ...
متن کاملConvolutional Coded Generalized Direct Sequence Spread Spectrum
In this thesis we investigate the worst-case performance of coded ordinary and coded generalized direct sequence spread spectrum (DSSS) systems in a communication channel corrupted by an unknown and arbitrary interfering signal of bounded power. We consider convolutional codes with Viterbi decoding in order to compare the performance of coded ordinary and coded generalized DSSS systems. For the...
متن کاملDirect Sequence Spread Spectrum Communications System in a Multipath Fading Channel. Rake Receiver Performance Analysis
The use of direct sequence spread spectrum (DS-SS) baseband modulation in a mobile communication system have proved to bring many advantages. In this paper a study of the DS-SS modulation and its performances in a multipath fading channel is presented, considering different parameters for the system and communication channel. A RAKE receiver is implemented to achieve diversity over the differen...
متن کاملNoncoherent detection for trellis-coded MPSK
This letter shows several methods for improving the decoding of noncoherent trellis-coded M -ary phase-shift keying. We propose two new metrics for basic decision-feedback algorithm. These metrics are derived based on the idea of reducing the effect of incorrect amplitude of the reference signal. We also propose a new decoding algorithm that uses a simple way to estimate the metric of the futur...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Transactions on Vehicular Technology
سال: 1998
ISSN: 0018-9545
DOI: 10.1109/25.669095