Digital communications: fundamentals and applications
Digital communications: fundamentals and applications
RF microelectronics
Performance of a robust inner receiver with frequency domain LMS equalizer for DSRC systems
Proceedings of the 2006 international conference on Wireless communications and mobile computing
A robust OFDM receiver for DSRC systems
ICCOM'06 Proceedings of the 10th WSEAS international conference on Communications
Variable length codes with unequal error protection for wireless communication systems
ICCOM'06 Proceedings of the 10th WSEAS international conference on Communications
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Narrow band MSK(Minimum Shift Keying) radio is applied for high receiving sensitive wireless communications like "walky-talky". iLBC (internet Low Bit-rate Codec) is widely used in VoIP (Voice over IP) applications like "Skype". This paper is concerned with the speech quality by using iLBC in narrow band MSK wireless communication. Several ULP (Uneven Level Protection) strategies to protect different part of iLBC coded payloads are evaluated under AWGN (Additive White Gaussian Noise). We utilize PESQ (Perceptual Evaluation of Speech Quality) to evaluate the perceptual speech quality. Simulation results show that significant improvement of PESQ scores are obtained by using appropriate ULP strategies so that our proposed MSK radio system can also achieve high receiving sensitivity.