Title :
A /spl pi//4-shift QPSK receiver for TDMA/TDD systems
Author :
Hosur, Srinath ; Dabak, A.G. ; Gharpurey, Ranjit ; Krishna, K. ; Papmichalis, P.
Author_Institution :
Texas Instrum. Inc., Dallas, TX, USA
Abstract :
This paper proposes a /spl pi//4-shift QPSK receiver for microcellular TDMA/TDD systems. The receiver is suited for an all-digital implementation. It assumes a coarse automatic gain-control (AGC) which is updated digitally. The receiver uses a new maximum-likelihood (ML) based scheme for fast synchronization in its all-digital timing recovery circuit. The proposed timing acquisition scheme is independent of the AGC setting and does not suffer from hangups.
Keywords :
CMOS digital integrated circuits; automatic gain control; cellular radio; digital radio; land mobile radio; quadrature phase shift keying; radio receivers; synchronisation; time division multiple access; /spl pi//4-shift QPSK receiver; AGC; CMOS; PCS terminals; PHS system; all-digital timing recovery circuit; automatic gain-control; fast synchronization; front-end architecture; maximum-likelihood based scheme; microcellular TDMA/TDD systems; timing acquisition; Application software; Cost function; Image coding; Image edge detection; Laboratories; Pixel; Polynomials; Quantization; Smoothing methods; Transform coding;
Conference_Titel :
Signals, Systems & Computers, 1997. Conference Record of the Thirty-First Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
Print_ISBN :
0-8186-8316-3
DOI :
10.1109/ACSSC.1997.680172
