4 papers
Equalization for Non-Coherent UWB Systems with Approximate Semi-Definite Programming
Xudong Ma
In this paper, we propose an approximate semi-definite programming framework for demodulation and equalization of non-coherent ultra-wide-band communication systems with inter-symb…
Novel Blind Signal Classification Method Based on Data Compression
Xudong Ma
This paper proposes a novel algorithm for signal classification problems. We consider a non-stationary random signal, where samples can be classified into several different classes…
Reduced Complexity Demodulation and Equalization Scheme for Differential Impulse Radio UWB Systems with ISI
Xudong Ma
In this paper, we consider the demodulation and equalization problem of differential Impulse Radio (IR) Ultra-WideBand (UWB) Systems with Inter-Symbol-Interference (ISI). The diffe…
Constructing LDPC Codes by 2-Lifts
Xudong Ma, En-hui Yang
We propose a new low-density parity-check code construction scheme based on 2-lifts. The proposed codes have an advantage of admitting efficient hardware implementations. With the…