用于数字无线电的11分接0.9 μ m CMOS数字横向均衡器

IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond Pub Date : 1989-11-27 DOI:10.1109/GLOCOM.1989.64005

H. C. Reeve, R. Ward, C.J. Lin, G. D. Martin

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引用次数: 1

摘要

设计并研制了一个0.9 μ m CMOS VLSI器件，作为数字无线电的自适应横向均衡器。该设备包含一个11分接的乘加结构，并配有用于12b系数的控制硬件。由于没有任何管道，该设备保证27mhz的操作，并且它已经证明了超过40mhz的速度。美国电话电报公司利用VLSI器件设计了一种数字无线电调制解调器，目前正在为64-QAM(正交调幅)4 ghz无线电系统制造。当误码率为1*10/sup -8/时，误码率(BER)性能相对于信噪比在理论(无纠错)的1.8 dB以内。m曲线是在20兆赫信道上测量的，非常接近理论。最后，将各种信道失真下的调制解调器采集统计数据制成表格，平均采集时间小于200毫秒。

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An 11-tap 0.9- mu m CMOS digital transversal equalizer for digital radio

A 0.9- mu m CMOS VLSI device was designed and developed to perform as an adaptive transversal equalizer for digital radio. The device contains an 11-tap multiply-add structure complete with control hardware for 12-b coefficients. Void of any pipelining, the device is guaranteed for 27-MHz operation, and it has demonstrated speeds in excess of 40 MHz. A digital radio modem has been designed by AT&T using the VLSI device and is now being manufactured for a 64-QAM (quadrature amplitude modulation) 4-GHz radio system. BER (bit error rate) performance versus S/N ratio was within 1.8 dB of theoretical (no error correction) at a BER of 1*10/sup -8/. M-curves were measured for the 20-MHz channel and were very close to theoretical. Finally, modem acquisition statistics were tabulated under various channel distortions, with the average time of acquisition being less than 200 ms.<>

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来源期刊

IEEE Global Telecommunications Conference, 1989, and Exhibition. 'Communications Technology for the 1990s and Beyond

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