Differentially-Keyed IR-UWB Signals for MA with Differential-Detection Receiver

Walid Mahmoud

Communications and Networks Engineering Department, Prince Sultan University, Riyadh, KSA.

DOI: 10.4236/jcc.2014.28004                

Abstract

Noncoherent communication receivers (differential-detectors) have simple design, however, they always incur bit error rate (BER) performance loss up to 3dB compared to coherent receivers. In this paper, a differential-detector is proposed for impulse radio ultra wideband (IR-UWB) communication systems. The system employs bit-level differential phase shift keying (DPSK) combined with code division (CD) for IR-UWB signals to support multiple-access (MA). It is analyzed under additive white Gaussian noise (AWGN) corrupted by multiple-access interference (MAI) channel. Its BER performance is compared against a reference coherent receiver using Monte-Carlo simulation method. A closed form expression for its average probability of error is derived analytically. Simulation results and theoretical analysis confirm the applicability of the proposed differential-detector for IR-UWB communication systems.

Keywords

Impulse-Radio Ultra-Wideband, Code Division Multiple Access, Multiple Access Interference, Bit Error Rate, Differential-Detection

Conflicts of Interest

The authors declare no conflicts of interest.

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