Analog Multi-Tone Signaling for High-Speed Backplane Electrical Links

— Implementing a multi-tone (MT) architecture for high-speed backplane electrical links is difficult given the tight power and complexity constraints in this application. This paper proposes an approach that incorporates a baseband (BB) channel and a few passband (PB) channels. In this MT system interchannel interference (ICI) and inter-symbol interference (ISI) are eliminated through fractionally spaced equalization at the transmitter and feedback equalization at the receiver. The design is modeled as a MIMO system, and optimal equalizer coefficients to minimize the transmit peak voltage are found by casting the optimization as a Second Order Conic (SOC) problem. In addition, for systems that need adaptation, we show how equalizer and power allocation coefficients can be obtained (sub optimally) using Zero Forcing (ZF) optimization. The effect of transmitter and receiver clock jitter are modeled in a way that can be included in both SOC and ZF optimizations, and the performance of t...

• Type: Conference
• Year: 2006
• Where: GLOBECOM
• Authors: Amir Amirkhany, Ali-Azam Abbasfar, Vladimir Stojanovic, Mark A. Horowitz
• Keywords: Baseband, Comparable Performance Baseband, GLOBECOM 2006, Optimal Equalizer Coefficients, Telecommunications