The DS/SSMA systems using trellis coding with asymmetric PSK signal constellation

نویسندگان

  • Seong Ill Park
  • Kwang Soon Kim
  • Hyung-Myung Kim
  • Iickho Song
چکیده

We analyze the performance of direct-sequence spread spectrum multiple access (DS/SSMA) systems, which use trellis coding with asymmetric phase shift keying (PSK) modulation. By designing the signal constellation to be asymmetric, we obtain a performance gain for the DS/SSMA system over the systems using the traditional symmetric signal constellation. Bit error probability analysis of the proposed system is carried out for some cases. Examples are given to show the performance gain due to the asymmetry of the signal constellation. ( 1998 Elsevier Science B.V. All rights reserved.

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

List of Key Publications and Patents

(On Communications: CDMA, Code acquisition, MIMO, Modulation, OFDM, etc) 1. S.I. Park, K.Y. Lee, and I. Song, "Performance analysis of FHSS BFSK systems with nonlinear detectors in selective fading impulsive noise environment", Signal Process., vol. 45, no. 3, pp. 275-292, Sep. 1995. 2. Y. Ryu, I. Song, T. Chang, and K.S. Kim, "Adaptive code rate change for maximum throughput in DS-SSMA communi...

متن کامل

Speech transmission using rate-compatible trellis codes and embedded source coding

This paper presents bandwidth-efficient speech transmission systems using rate-compatible channel coders and variable bitrate embedded source coders. Rate-compatible punctured convolutional codes (RCPC) are often used to provide unequal error protection (UEP) via progressive bit puncturing. RCPC codes are well suited for constellations for which Euclidean and Hamming distances are equivalent (B...

متن کامل

A multiuser receiver for trellis-coded DS/CDMA systems in asynchronous channels

In this paper, we propose and analyze a multiuser receiver using a decorrelating filter and Viterbi decoders for trellis-coded direct-sequence code-division multiple-access (DS/CDMA) systems with biorthogonal signal constellation in asynchronous channels. The biorthogonality is implemented by user signature waveforms and the decorrelating filter. The performance of the proposed system is invest...

متن کامل

Combined Source-Channel Coding of Images under Power and Bandwidth Constraints

This paper proposes a framework for combined source-channel coding for a power and bandwidth constrained noisy channel. The framework is applied to progressive image transmission using constant envelope M-ary phase shift key (M-PSK) signaling over an additive white Gaussian noise channel. First, the framework is developed for uncoded M-PSK signaling (with M = 2k). Then, it is extended to includ...

متن کامل

Speech Transmission Using Rate - Compatible Trellis

| This paper presents bandwidth-eecient speech transmission systems using rate-compatible channel coders and variable bitrate embedded source coders. Rate-compatible punctured convolutional codes (RCPC) are often used to provide unequal error protection (UEP) via progressive bit puncturing. RCPC codes are well suited for constellations for which Euclidean distance and Ham-ming distance are equi...

متن کامل

ذخیره در منابع من

ذخیره در منابع من قبلا به منابع من ذحیره شده

{@ msg_add @}


  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:
  • Signal Processing

دوره 67  شماره 

صفحات  -

تاریخ انتشار 1998