The idea of software radio requires an expansion of digital signal processing towards the
antenna. Hence, for converting the received signal to baseband, the need of efficient high …

Software radios are an attractive alternative to conventional designs. However, they place
rather extreme demands upon the analog to digital and digital to analog converters in the …

With the expansion of wireless concepts in mobile communications, for example ETTM
(electronic tolling and traffic management) and DAB (digital audio broadcasting) receiver …

In modern radio communications systems Digital Down Converters (DDC) play a significant
role to receive a transmitted signal. The transmitted signal, which is usually a bandpass …

Digital down converter (DDC) is the one of the key technologies in the field of software
define radio (SDA). Compared with traditional ASIC DDC devices, DDCs implemented by …

In this paper, we propose a programmable digital up and down converter (DUC and DDC)
structure, which can be used in digital transmitters and receivers that meets IEEE 802.16 d …

The center idea behind the software radio architecture is to place analog-to-digital and
digital-to-analog converters as near the antenna as possible, leaving the implementation of …

CORDIC is a versatile algorithm widely used for VLSI implementation of digital signal
processing applications. This article presents a tutorial of how to use CORDIC to implement …

This paper analyses the typical digital modulation techniques used in today's wireless
communications. The paper presents the characteristics of the modulation techniques and …

This paper discusses the utilization of a relatively inexpensive wideband radio receiver in
combination with a digital down-converter (DDC) based data recorder to capture and record …