Design of an 8-Channel FFT Processor for IEEE 802.11ac MIMO-OFDM WLAN System
| Autor: | Ji-Min Guo, Long-Zhao Shi |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Standard cell
0209 industrial biotechnology Computer science Applied Mathematics Fast Fourier transform Prime-factor FFT algorithm Hardware description language 02 engineering and technology MIMO-OFDM 021001 nanoscience & nanotechnology 020901 industrial engineering & automation Split-radix FFT algorithm IEEE 802.11ac Logic gate Signal Processing Electronic engineering Hardware_ARITHMETICANDLOGICSTRUCTURES 0210 nano-technology computer computer.programming_language |
| Zdroj: | Circuits, Systems, and Signal Processing. 35:3759-3769 |
| ISSN: | 1531-5878 0278-081X |
| DOI: | 10.1007/s00034-015-0217-z |
| Popis: | In this study, an area-efficient 8-channel 128-point fast Fourier transform (FFT) processor is proposed for IEEE 802.11ac standard MIMO-OFDM system. The proposed FFT processor is based on mixed-radix multi-path delay commutator (MRMDC) architecture and supports eight spatial data streams. Using input memory array transpose architecture and a bit-reversal circuit, the proposed FFT processor can generate eight input and output spatial data streams in natural order. Therefore, the processor can be used directly in MIMO-OFDM systems without additional input or output RAM. The proposed FFT processor is designed using hardware description language and synthesized to a gate-level circuit using a TSMC 90-nm CMOS standard cell library. Compared with other 8-channel MRMDC FFT processors, the proposed FFT processor can reduce the logic gate count of the MRMDC module by approximately 12.5 %. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink