000			03780nas|a2200457 i 4500
005			20260818084705.0
008			030507s2003 th u m rtt 00| a1eng d
035			_a.b11924767
099		9	_aAIT RSPR no.TC-03-07
100	0		_aNguyen Tuan Khanh
245	1	0	_aConcatenation of space-time block codes and trellis-coded modulation over fading channels
260			_aPathum Thani, Thailand : _bAsian Institute of Technology, _c2003
300			_a49 leaves
490	1		_aResearch studies project report ; _vno. TC-03-07
500			_aA research study submitted in partial fulfillment of the requirement for the degree of Master of Engineering, School of Advanced Technologies
502			_aResearch report (M.Sc.) - Asian Institute of Technology, 2003
520			_aAntenna diversity is an effective technique to increase the stabilization in wireless communication system without bandwidth expansion. Space-Time Block Codes (STBC), using Orthogonal structure, is also a diversity technique to improve the performance of the system. STBC can achieve the full diversity gain with very simple decoding but can not get perfect performance for coding gain. Trellis-Coded Modulation (TCM) is a kind of channel coding with improving the coding gain. Therefore, Concatenation of STBC and TCM is a combined channel coding to achieve both diversity and coding gain advantages. In this research study, we evaluate the performance of STBC with different numbers of antennas at the transmitter and at the receiver in both basic STBC and concatenated STBC with TCM. We also consider the STBC with different kinds of modulation and TCM over frequency-flat fading channel and frequency -selective fading channel. Simulation results show that the more antennas at transmitter or at receiver get better the performance. The performance of STBC with using matrix G3(3Tx,1Rx) can improve about 5.5 dB comparing with G2(2Tx,1Rx) and the better performance of G4(4Tx,1Rx) is about 2.5 db comparing with G3(3Tx,1Rx). With the same diversity order of 4, the basic STBC using G2 with 2Tx and 2Rx antennas has better performance about 3 dB comparing with G4 using 4 Tx and 1 Rx. The concatenated STBC with TCM can achieve a gain of 11.2 dB more than the basic STBC at a BER level of 10-5 over frequency-flat fading channel.
650		0	_aSpace and time
650		0	_aDigital communications
700	1		_aAhmed, Kazi Mohiuddin, _eChairperson
700	1		_aErke, Tapio J., _eExamination Committee
700	1		_aFernando, W.A.C., _eExamination Committee
710	2		_aHo Chi Minh City Post and Telecommunications, _eScholarship donor
810	2		_aAsian Institute of Technology. _tResearch studies project report ; _vno. TC-03-07
856			_3Full-Text _uhttp://203.159.5.9/ait-thesis/detail.php?q=B08428
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