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In this paper, we propose and investigate a low-cost and low-complexity wireless ambulatory human locomotion tracking system that provides a high ranging accuracy (intersensor distance) suitable for the assessment of clinical gait analysis using wearable ultra wideband (UWB) transceivers. The system design and transceiver performance are presented in additive-white-Gaussian noise and realistic channels,...
Effects of multiple access interference (MAI) and frequency offset on bit error rate (BER) performance of synchronous coded minimum shift keying/multi-carrier code division multiple access (MSK/MC-CDMA) systems were considered using standard Gaussian approximation (SGA). Simulations were carried out in AWGN and frequency selective Rayleigh fading channels. Results showed that the un-coded MSK/MC-CDMA...
The BER performances of differential and non- differential synchronous downlink multi-carrier code division multiple access (MC-CDMA) systems that employ random spreading are studied and compared using Standard Gaussian Approximation (SGA) in AWGN channel. Furthermore, Monte-Carlo simulations were carried out to compare the BER performances of these systems in AWGN and in frequency selective Rayleigh...
Orthogonal frequency division multiplexing (OFDM) is an important candidate for fourth generation cellular systems that support high data rates. Performance of OFDM systems is sensitive to non-perfect frequency synchronization, which leads to frequency offsets and a consequent degradation in system performance. In cellular systems, there is a tradeoff between link quality and capacity; both are controlled...
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