Now showing items 1-6 of 6
DRM Transmitter with FPGA Device
(Společnost pro radioelektronické inženýrství, 2007-06)
This paper presents the design and analysis of the OFDM modulator for Digital Radio Mondiale (DRM) standard. Attention is paid to the digital signal processing in FPGA devices. The system performs carrier modulation of the ...
Chip Interleaving and its Optimization for PAPR Reduction in MC-CDMA
(Společnost pro radioelektronické inženýrství, 2007-12)
This paper analyzes the usability of peak to average power ratio (PAPR) reduction in multicarrier code division multiple access (MC-CDMA) by the chip interleaving optimization. This means chip position formatting to PAPR ...
UWB System Performance Improvement Using Smart Interference Rejection Filter
(Společnost pro radioelektronické inženýrství, 2009-06)
In this paper we proposed a smart interference rejection filter in TH-PPM UWB system, which improves the system\'s error probability for an order of magnitude in case of high power OFDM interference. The smart filter is ...
Preamble Design Problematic with 802.11a IEEE Standard (Minn’s Training Sequence Approach)
(Společnost pro radioelektronické inženýrství, 2008-09)
Generally OFDM systems use a predefined signal pattern, called preamble  , which helps the receiver to achieve a better signal detection (coarse, fine time synchronization) with the frequency offset and channel ...
An Interference Cancellation Scheme for TFI-OFDM in Time-Variant Large Delay Spread Channel
(Společnost pro radioelektronické inženýrství, 2009-04)
In the mobile radio environment, signals are usually impaired by fading and multipath delay phenomenon. In such channels, severe fading of the signal amplitude and inter-symbol-interference (ISI) due to the frequency ...
On the Reduced Complexity Interleaving Method for OFDM PAPR Reduction
(Společnost pro radioelektronické inženýrství, 2006-09)
Many methods for OFDM Peak to Average Power Ratio reduction have been proposed during approximately last ten years. There are nowadays many research efforts on PAPR reduction methods with reduced computational complexity. ...