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GC1115,pdf(Crest Factor Reduct

消耗积分:5 | 格式:rar | 大小:916 | 2010-07-08

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The GC1115 is a flexible, programmable, wideband crest factor reduction (CFR) processor with a maximum composite bandwidth of 32 MHz (4 clocks/complex sample, one channel) or 16 MHz (8 clocks/complex sample, two channels). The GC1115 selectively reduces the peak-to-average ratio (PAR) of wideband digital signals provided in quadrature (I and Q) format. By reducing the PAR of digital signals, the efficiency of follow-on power amplifiers (PAs) is improved, the D/A converter requirements are eased, and the out-of-band spectral regrowth caused by simple hard limiting is eliminated.

Manufacturers of 3G BTS equipment can realize significant savings on power amplifier costs by including the GC1115. The GC1115 meets multicarrier 3G performance standards (PCDE, composite EVM, and ACLR) at PAR levels down to 6 dB.

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