Digital signal processing (DSP) industry has been growing rapidly over the past few years; it remains the technology driver for the recovering semiconductor industry. Performance evaluation is essential for the users and manufacturers of DSP processors. Since DSP application programs become larger and more complicated, people need new benchmarks for performance evaluation of different DSP proce...

D eveloping a single-processor platform is bad enough. Adding another to the mix could drive even the best developers over the edge, especially when the mix involves a general-purpose processor (GPP) and a DSP. Take heart. A new way of thinking and working allows DSP processes to make operating system calls that are processed by the GPP. Likewise, the operating system running on the GPP can con...

Current DSP architectures are designed to enhance the execution of computationally-intensive, kernel-like loops. Their peculiar architectural features are often difficult for high-level language compilers to exploit. Moreover, their tightly-encoded instruction sets usually restrict the exploitation of instruction-level parallelism beyond a few instances. The quality of compiler-generated code i...

EFFICIENT PARALLEL PROCESSING WITH OPTICAL INTERCONNECTIONS

Digital Signal Processors (DSPs) are employed in all fields of multimedia applications such as speech, audio, modem, video, or graphics. Often, they are embedded into multimedia systems as a System on Chip (SoC) component. Although DSPs could still be modified in the SoC domain, they are mainly employed as fixed DSP cores. Possible adaptations to the embedding system are not carried out. Thus, ...

Using directional antennas to conserve bandwidth and energy consumption in ad hoc networks is becoming popular in recent years. However, applications of directional antennas for broadcasting have been limited. We propose a novel broadcast protocol called directional self-pruning (DSP) for ad hoc networks using directional antennas. DSP is a non-trivial generalization of an existing localized de...

Executive Summary This white paper compares and contrasts the two major implementations of beamforming found in the market today: ● Switched array beamforming ● Digital signal processing (DSP)-based beamforming This paper suggests that both methods do offer some performance gain but that DSP-based beamforming (such as used in ClientLink 2.0) is superior (especially when supporting a network wit...

With the growing popularity of DSPs and their associated applications, cost-effective software development has become a major issue. High-level language compilers are becoming more commonplace in the DSP world. While these compilers can generate correct code for DSP architectures, there remains considerable room for performance improvements. This paper addresses issues related to DSP compilatio...