Design of an OFDM baseband receiver with space diversity
Journal
IEE Proceedings-Communications
Journal Volume
153
Journal Issue
6
Pages
894-900
Date Issued
2006
Author(s)
Abstract
An orthogonal frequency division multiplexing (OFDM) baseband receiver chip is proposed. Carrier frequency synchronisation, symbol boundary estimation, and channel estimation and frequency-domain equalisation, all based on well known and proven algorithms, have been integrated in the receiver. The complexity and power consumption of the chip are minimised by full-custom memory blocks, word-length optimisation and innovative architecture. This chip has a core area of 4.1mm×4.6mm. When running at 20MHz, the chip consumes 66mW from a 2.3 V supply. By using two such ICs and some diversity combining hardware, competitive measured packet error rates have been obtained, indicating that the chip, and the diversity receiver based on this chip, can operate reliably in a multipath fading environment.
Other Subjects
Boundary conditions; Computational complexity; Computer hardware; Energy utilization; Frequency domain analysis; Microprocessor chips; Signal receivers; Synchronization; Baseband receiver chips; Carrier frequency synchronization; Multipath fading environment; Symbol boundary estimation; Orthogonal frequency division multiplexing
Type
journal article