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In this paper, we propose a repetitive transmission method for improving the reception performance of VICS (Vehicle Information and Communication System) on DARC (DAta Radio channel). DARC is a teletext broadcasting system multiplexed on an existing FM (Frequency Modulation) radio broadcasting. However the reception performance of DARC does not satisfy the demand for VICS application in multipath...
This paper proposes a design framework based on efficient peak-to-average power (PAPR) for orthogonal frequency division multiplexing (OFDM) and carrier interferometry OFDM (CI/OFDM) systems with iterative clipping. In this paper, we utilize the efficient PAPR which is defined as the PAPR minimizing the total degradation (TD) to determine the optimum clipping ratio (CR) considering the effects of...
In this paper, a new channel information estimation scheme for multi-route multi-hop networks is discussed. Multi-hop network has received much attention recent years because of its large channel capacity. When the information bit streams are transmitted over multiple routes, a route diversity effect would also be possible. In order to improve the route diversity effect the receiver has to obtain...
In this paper, we propose a novel fast and low complexity algorithm of computation for minimum-mean-square-error (MMSE) equalizer or combiner without divisions. Multiplicative effect of fading channel should be compensated by divisions at the receiver. Therefore, equalizer or combiner at the receiver is derived by inverting the channel impulse responses. Here, the number of divisions equals to the...
This paper proposes a new technique for peak-to-average-power ratio (PAPR) reduction without spectrum broadening for Carrier Interferometry orthogonal frequency division multiplexing (CI/OFDM) system. Recently, Carrier Interferometry (CI) code is becoming an interesting code for reducing the PAPR of OFDM system. However, for guaranteeing the low PAPR as the PAPR of single carrier (i.e. by about 4-6dB...
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