| Authors |
M. Sawada, H. Okada, T. Yamazato, M. Katayama |
| Title |
Influence of ADC Nonlinearity on the Performance of an OFDM Receiver |
| Authority |
IEICE Transactions on Communications, vol.E89-B, no.12, pp.3250-3256 |
| Summary |
This paper discusses the influence of the nonlinearity of analog-to-digital converters (ADCs) on the performance of orthogonal frequency
division multiplexing (OFDM) receivers.
We evaluate signal constellations
and bit error rate performances while considering quantization errors and clippings. The optimum range for an ADC input amplitude is
found as a result of the trade-off between quantization error and the effects of clipping. In addition, it is shown that the peak-to-average power ratio (PAPR) of the signal is not a good measure of the bit error rate (BER) performance,
since the largest peaks occur only with very low probabilities.
The relationship between the location of a subcarrier and its performance
is studied.
As a result, it is shown that the influence of the quantization
error is identical for all subcarriers, while the effects of clipping depend on
the subcarrier frequency.
When clipping occurs, the BER performance of a
subcarrier near the center frequency is worse than that near the edges. |
| 年月 |
2006年12月 |
| DOI/Handle |
|
| 研究テーマ |
|
| 言語 |
英語 |
| 原稿/プレゼン資料 |
 / 無し (ローカル限定) |
