Title :
Affine precodino for hidden pilot desion for MIMO-OFDMA systems
Author :
Byung Wook Wim ; Park, Dong-Jo ; Jung, Sung-Yoon
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea
Abstract :
This paper deals with a new hidden pilot scheme using a precoder in multiple-input multiple-output (MIMO) orthogonal frequency division multiple access (OFDMA) systems in order to improve bandwidth efficiency. With the aid of the hidden pilot scheme, it is possible to estimate the channel without loss of bandwidth. In this paper, we show that the inevitable unknown data interference of the hidden pilot which degrades the performance of channel estimation can be successively reduced by the precoder decision with an iterative scheme. Computer simulations are presented where the proposed scheme is compared with the conventional method in terms of channel estimation, BER, bandwidth efficiency.
Keywords :
MIMO communication; OFDM modulation; affine transforms; channel estimation; frequency division multiple access; interference (signal); precoding; MIMO-OFDMA Systems; affine precoding; channel estimation; data interference; hidden pilot decision; multiple input multiple output orthogonal frequency division multiple access; Bandwidth; Channel estimation; Data engineering; Design engineering; MIMO; OFDM; Power engineering and energy; Receiving antennas; Transmitting antennas; Wireless communication; MIMO-OFDMA; bandwidth efficiency; hidden pilot; precodino;
Conference_Titel :
Computer and Automation Engineering (ICCAE), 2010 The 2nd International Conference on
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-5585-0
Electronic_ISBN :
978-1-4244-5586-7
DOI :
10.1109/ICCAE.2010.5452022
