Efficient implementation of an I-Q GMSK modulator

被引:21
作者
Linz, A
Hendrickson, A
机构
[1] Advanced Micro Devices Inc., Communications Products Division, austin, TX
来源
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING | 1996年 / 43卷 / 01期
关键词
D O I
10.1109/82.481470
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
An efficient implementation of GMSK modulators achieved taking advantage of symmetry properties of the premodulation filter is described, The design bypasses typical processing steps such as modulating waveform ROM lookup, integration, and sine/cosine ROM lookup, and therefore does not introduce the related errors, A design for a cordless telephony IC with a bit rate of 72 Kbps and 64 samples per symbol was implemented using only simple logic and 128 x 6 bits of ROM plus 2 simple 6 b +sign DAC's.
引用
收藏
页码:14 / 23
页数:10
相关论文
共 7 条
[1]  
ABRAMOWITZ M, HDB MATH FUNCTIONS
[2]  
GRADSHTEYN IS, 1980, TABLES INTEGRALS SER, P633
[3]   A 270-KB/S 35-MW MODULATOR IC FOR GSM CELLULAR RADIO HAND-HELD TERMINALS [J].
HASPESLAGH, JJJ ;
SALLAERTS, D ;
REUSENS, PP ;
VANWELSENAERS, A ;
GRANEK, R ;
RABAEY, D .
IEEE JOURNAL OF SOLID-STATE CIRCUITS, 1990, 25 (06) :1450-1457
[4]   GMSK MODULATION FOR DIGITAL MOBILE RADIO TELEPHONY [J].
MUROTA, K ;
HIRADE, K .
IEEE TRANSACTIONS ON COMMUNICATIONS, 1981, 29 (07) :1044-1050
[5]  
PAPOULIS A, 1962, FOURIER INTEGRAL ITS, pCH6
[6]  
PASUPATHY S, 1979, IEEE COMMUN MAG JUL
[7]  
PROAKIS JG, 1983, DIGITAL COMMUNICATIO