• Publications
  • Influence
Performance of multicarrier DS CDMA systems
We apply a multicarrier signaling technique to a direct-sequence CDMA system, where a data sequence multiplied by a spreading sequence modulates multiple carriers, rather than a single carrier. Expand
  • 666
  • 54
Theory of Spread-Spectrum Communications - A Tutorial
We provide a tutorial treatment of the theory of spread-spectrum communications, including a discussion on the applications referred to above, on the properties of common spreading sequences, and on techniques that can be used for acquisition and tracking. Expand
  • 1,434
  • 43
  • PDF
Coherent DS-CDMA performance in Nakagami multipath fading
The coherent reception of direct sequence-code division multiple access (DS-CDMA) signals in a multipath fading channel is considered. Expand
  • 398
  • 41
Capacity-approaching bandwidth-efficient coded modulation schemes based on low-density parity-check codes
We design multilevel coding (MLC) and bit-interleaved coded modulation (BICM) schemes based on low-density parity-check (LDPC) codes. Expand
  • 279
  • 35
  • PDF
Performance analysis and code optimization of low density parity-check codes on Rayleigh fading channels
A numerical method has been presented to determine the noise thresholds of low density parity-check codes that employ the message passing decoding algorithm on the additive white Gaussian noise (AWGN) channel. Expand
  • 347
  • 28
  • PDF
On the performance of hybrid FEC/ARQ systems using rate compatible punctured turbo (RCPT) codes
This paper introduces a hybrid forward-error correction/automatic repeat-request (ARQ) system that employs rate compatible punctured turbo (RCPT) codes to achieve enhanced throughput performance over a nonstationary Gaussian channel. Expand
  • 426
  • 24
Interference rejection techniques in spread spectrum communications
It is argued that the ability of a spread-spectrum system to withstand interference, both intentional and unintentional, is probably its greatest asset. Any spread spectrum receiver can only suppressExpand
  • 532
  • 22
  • PDF
A noise-whitening approach to multiple access noise rejection .I. Theory and background
In this paper, receivers that maximize signal-to-noise ratio in a DS-CDMA system model under various constraints are proposed and analyzed. Expand
  • 110
  • 21
On the accuracy of a first-order Markov model for data transmission on fading channels
Transmission of data blocks on a fading mobile radio channel is considered. Expand
  • 416
  • 18
  • PDF
ARQ error control for fading mobile radio channels
In this paper, we study the correlation properties of the fading mobile radio channel. Expand
  • 309
  • 17
  • PDF