Title :
On the synchronization of MC-CDMA system for indoor wireless communications
Author :
Han, Dong-Seog ; Kim, Yong-Jung ; Lee, Hyun-Kyu
Author_Institution :
Sch. of Electron. & Electr. Eng., Kyungpook Nat. Univ., Taegu, South Korea
Abstract :
The frame synchronization and timing recovery algorithms for the multi-carrier (MC) code-division multiple access (CDMA) system are proposed. For the frame synchronization, a simple subtraction method operating under carrier offset is considered. The subtraction method operates well if the signal to noise ratio (SNR) is greater than 5 dB. The proposed timing recovery algorithm utilizes the phase offset between the received and the transmitted reference pilot signals. It operates correctly even under a carrier frequency offset of up to ±0.3 Hz, where we considered the carrier frequency distance between two consecutive sub-carriers is 1 Hz, with an SNR of 5 dB
Keywords :
OFDM modulation; code division multiple access; indoor radio; land mobile radio; multiuser channels; synchronisation; 5 dB; MC-CDMA system synchronization; OFDM; QPSK signal constellation; SNR; Walsh-Hadamard code; carrier frequency distance; carrier frequency offset; carrier offset; forward link; frame synchronization algorithm; indoor wireless communications; multi-carrier code-division multiple access; orthogonal frequency-division multiplexing; phase offset; quadrature phase shift keying; received reference pilot signal; signal to noise ratio; sub-carriers; subtraction method; timing recovery algorithm; transmitted reference pilot signal; wideband wireless communications; Constellation diagram; Frequency synchronization; Multiaccess communication; Multicarrier code division multiple access; OFDM; Quadrature phase shift keying; Signal to noise ratio; Timing; Transmitters; Wireless communication;
Conference_Titel :
Vehicular Technology Conference, 1999. VTC 1999 - Fall. IEEE VTS 50th
Conference_Location :
Amsterdam
Print_ISBN :
0-7803-5435-4
DOI :
10.1109/VETECF.1999.798418
