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

• 作者: Walid Mahmoud
• 来源期刊: 电脑和通信(英文)
• 学科: 工学
• 关键词: Impulse-Radio Ultra-Wideband Code Division MULTIPLE ACCESS MULTIPLE ACCESS Interference Bit Error Rate Differential-Detection
• 年，卷（期）: 2014,（8）
• 页码范围: 32-42
• 页数: 11页
• 分类号: TN92

摘要

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.