The object of this study was to examine the relationship between excitatory postsynaptic potential (EPSP) amplitude, posttetanic potentiation, and EPSP amplitude modulation at synapses made by group Ia afferents on motoneurons in the rat. These relationships were evaluated in cells in untreated rats and in cells in rats treated with the gamma-aminobutyric acid-B (GABAB) receptor agonist baclofe...

in this paper, we propose an optical millimetre wave radio-over-fibre (mm-wave rof) system that uses a dual drive mach zehnder modulator (dd-mzm), which is biased at the maximum transmission biasing point, to generate an optical double sideband-suppressed carrier. the input to the dd-mzm are binary phase shift keying (bpsk), quadrature phase shift keying (qpsk), 8-phase shift keying (8-psk) and...

This paper presents a novel data modulation scheme PCCD-OFDM-ASK: the phase continuous context dependent orthogonal frequency division multiplexing amplitude shift keying. The proposed modulation is successfully applied in the mobile payment system. It is used to transmit the digital data over the speech channel of the mobile communication system GSM, as well as CDMA. The main key points of the...

This paper presents a design for an ASK-based IF-stage. This IF-stage was designed as part of a single-chip ISM band short range wireless telemetry system. The design was fabricated in 0.5μm CMOS process. Two main components of the IF-block are discussed in this paper. Measurement and simulation results are provided for the AGC circuit and the ASK detector. The measured dynamic range for the AG...

We show that inserting pilot tones with frequency intervals inversely proportional to the subcarrier index exhibits greatly improved dispersion estimation performance when compared to the equal spacing design in optical fast orthogonal frequency division multiplexing (F-OFDM). With the proposed design, a 20-Gbit/s four amplitude shift keying optical F-OFDM system with 840-km transmission withou...

The paper describes algorithms for the classification of digital modulations and estimation of symbol length. ASK, FSK2, FSK4, MSK, BPSK, QPSK, 8PSK and QAM-16 were chosen for recognition as the best-known digital modulations used in modern communication technologies. The first algorithm is based on module and phase spectrogram analysis, the second algorithm uses instantaneous values of signal ...

We propose a new energy efficient communication scheme for multihop wireless sensor networks (WSNs). Our run-zero encoding (RZE) communication scheme utilizes the concepts of the RBNSiZeComm protocol introduced in [1–3]. However, unlike RBNSiZeComm, RZE simultaneously saves energy at both the transmitter and receiver. Also, maintaining synchronization between transmitter and receiver is easier ...

| Multilevel coding (MLC) schemes with powerful softly decodable component codes like turbo codes allow very power and bandwidth eecient digital communication WH95, FHW96, WFH97a]. But the use of the non{ quantized channel output in each stage of the multistage decoding procedure leads to highly complex receivers. In this paper, the employment of hard decision decoding at several coding levels ...