Frequency-domain equalization (FDE) based on minimum mean square error (MMSE) criterion can replace rake combining with much improved bit error rate (BER) performance of the multi-code direct sequence spread spectrum (DSSS) signal transmission in a severe frequency-selective fading channel. However, since the channel cannot be completely equalized, the residual inter-code interference (ICI) is ...

The signal structure performance of a direct sequence spread spectrum (DSSS) code division multiple access (CDMA) frequency division multiple access (FDMA) pseudolite indoor communication and localization (geolocation) system is presented and discussed in this paper. The signal structure of a DSSSFCDMA (or C-CDMA) pseudolite indoor geolocation system appears to elegantly solve the near-far prob...

Since early experimentation in the late 1800’s, wireless communication has become increasingly important and has been widely adopted by civilian and military markets worldwide. The proliferation of wireless communication systems presents new challenges, threats and opportunities for society and government institutions. Although the possibility of infringing privacy laws exist, electronic survei...

DSSS (Direct Sequence Spread Spectrum) is one of the main technique of spread spectrum system and is the most common version use for military communication. In this paper, I have designed and implemented RADAR (Radio Wave Detection and Ranging) transmitter and receiver using direct sequence spread spectrum for range estimation. Most challenging part in RADAR system is to be getting better accur...

As the channel frequency selectivity becomes severer, the bit error rate (BER) performance of direct sequence spread spectrum (DSSS) signal transmission with rake combining degrades due to an increasing inter-path interference (IPI). Frequency-domain equalization (FDE) can replace rake combining with much improved BER performance in a severe frequency-selective fading channel. For FDE, accurate...

Spatial diversity has been gaining significant momentum in cellular systems due to its ability to improve radio links in mobile wireless channels. Techniques of spatial diversity have been expanded to build foundations for advanced antenna array technology, to increase capacity in mobile wireless communication systems due to radiation patterns that direct energy only in the intended direction, ...

The success of Autonomous Vehicle (AV) systems largely depends on fast alignment of their resources, to meet (and exceed) the actual (and perceived) requirements of the changing operational environment. A review of key literature applicable to AV practices and planning issues provides a short assessment of planning scenarios, highlighting their complexity, limitations and the possible scope for...

Wireless transmissions can be significantly affected by influences from its surroundings, which are most commonly expressed in a form of error probability statistics. IEEE 802.15.4 wireless personal area networks (WPANs) use Direct Sequence Signal Spreading (DSSS) technique in order to be able to operate together with other types of wireless networks in 2.4GHz band. By use of DSSS, IEEE 802.15....