Browsing by Author "Shen, Shih-Chi"

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Tone-Interleaved Coded Modulation Scheme for MIMO OFDM Communication
(2009-01-29)
Wu, Wen-Rong
;
Shen, Shih-Chi
A MIMO OFDM system for TICM is provided. The tone-level interleaver at the transmitter uses a block of NT symbols as its basic unit. This results in different decoding architectures at the receiver. The main advantage of TICM is to merge soft-bit demapping into the Viterbi algorithm. Taking the advantage of the trellis structure inherent in the Viterbi algorithm, TICM can have lower computational complexity and potentially better performance than BICM with the LSD detector and the vector demapper. Although the tone-level interleaving may not have spatial diversity gain, the performance is not affected in 802.11n environments.
Wireless Communication Systems, Apparatus and Method for Encoding and Decoding a Plurality of Information Bits
(2009-04-30)
Wu, Wen-Rong
;
Shen, Shih-Chi
;
Lin, Yu-Cheng
Wireless transmitted system and apparatus and method for encoding a plurality of information bits to a plurality of transmitted signals thereof, and wireless received system and apparatus and method for decoding a received signal to a plurality of information bits thereof are provided. The wireless transmitted system encodes a plurality of information bits to a plurality of transmitted signals by two logic operation modules, an interleaving module, and a combination module. The wireless received system decodes a received signal to a plurality of information bits by a division module, two probability generation modules, two status calculation modules, a signal generation module and a combination module.