Name
Abstract | ||
|---|---|---|
In this brief, a high-throughput and low-complexity fast Fourier transform (FFT) processor for wideband orthogonal frequency division multiplexing communication systems is presented. A new indexed-scaling method is proposed to reduce both the critical-path delay and hardware cost by employing shorter wordlength. Together with the mixed-radix multipath delay feedback structure, the proposed FFT processor can achieve very high throughput with low hardware cost. From analysis, it is shown that the proposed indexed-scaling method can save at least 11% memory utilizations compared to other state-of-the-art scaling algorithms. Also, a test chip of a 1.2 Gsample/s 2048-point FFT processor has been designed using UMC 90-nm 1P9M process with a core area of 0.97 mm2. The signal-to-quantization-noise ratio (SQNR) performance of this test chip is over 32.7 dB to support 16-QAM modulation and the power consumption is about 117 mW at 300 MHz. Compared to the fixed-point FFT processors, about 26% area and 28% power can be saved under the same throughput and SQNR specifications. |
Year | DOI | Venue |
|---|---|---|
2008 | 10.1109/TCSII.2007.910771 | IEEE Trans. on Circuits and Systems |
Keywords | Field | DocType |
wpan application,mixed-radix multipath delay feedback structure,16-qam modulation,wireless personal area network (wpan),data scaling,wireless personal area network,indexed-scaling pipelined fft processor,fast fourier transform,ofdm modulation,personal area networks,test chip,wideband orthogonal frequency division multiplexing,quadrature amplitude modulation,size 90 nm,frequency 300 mhz,umc 90-nm 1p9m process,convergent block floating point (cbfp),orthogonal frequency-division multiplexing (ofdm),fast fourier transform (fft),mixed- radix multipath delay feedback (mrmdf),fast fourier transforms,indexed-scaling,ofdm communication system,pipeline processing,throughput,signal to quantization noise ratio,high throughput,chip,communication system,testing,fixed point,indexation,algorithm design and analysis,hardware,ofdm,critical path,feedback | Wideband,Quadrature amplitude modulation,Computer science,Communications system,Electronic engineering,Modulation,Chip,Fast Fourier transform,Throughput,Orthogonal frequency-division multiplexing | Journal |
Volume | Issue | ISSN |
55 | 2 | 1549-7747 |
Citations | PageRank | References |
21 | 1.48 | 5 |
Authors | ||
5 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Cheng Chen | 1 | 550 | 120.48 |
| Yu-Chi Tsao | 2 | 75 | 7.49 |
| Yu-Wei Lin | 3 | 114 | 9.86 |
| Chin-Hung Lin | 4 | 45 | 4.26 |
| Chen-Yi Lee | 5 | 1211 | 152.40 |