CDMA phone sets low-cost bar Teardown 10/30/2006 Post a comment LG Electronics' RD3330 CDMA phone for Indian cellular markets keeps component count and feature set to a minimum to meet aggressive production cost targets.
Fixed-Point DSP and Algorithm Implementation Design How-To 10/25/2006 6 comments This article provides a primer on the use of fixed-point arithmetic in DSP algorithms. It covers concepts such as two's complement representation, dynamic range, overflow, truncation, and saturation. The article also introduces key filtering concepts.
Tear Down: Inside the Apple 8GB iPod nano Teardown 10/8/2006 Post a comment What makes the new 8GB iPod nano are the "mystery chips" that have been widely speculated about. These three Apple packaged components in the latest iPod nano have telltale marks that unequivocally prove the manufacturers.
Open Source Embedded Asterisk-based PBX Design How-To 10/4/2006 3 comments Building an embedded IP-PBX represents a significant paradigm shift from existing open source PBX designs that typically use PCI cards on x86 platforms. Until recently, current micro controllers
(e.g. those in the 200MHz ARM & MIPs class) typically lack the DSP
horsepower for multiple channels of speech compression or echo
cancellation that is required for analog line interfaces. The Analog
Device Blackfin chip has changed all this......
As data rates begin to move beyond 25 Gbps channels, new problems arise. Getting to 50 Gbps channels might not be possible with the traditional NRZ (2-level) signaling. PAM4 lets data rates double with only a small increase in channel bandwidth by sending two bits per symbol. But, it brings new measurement and analysis problems. Signal integrity sage Ransom Stephens will explain how PAM4 differs from NRZ and what to expect in design, measurement, and signal analysis.
January 2016 Cartoon Caption ContestBob's punishment for missing his deadline was to be tied to his chair tantalizingly close to a disconnected cable, with one hand superglued to his desk and another to his chin, while the pages from his wall calendar were slowly torn away.122 comments