Title :
Using the LAS Space-Time Spreading Codes to Achieve High Spectral Efficiency
Author_Institution :
Beijing Univ. of Posts & Telecommun.
Abstract :
Recent advancements in multiple-input-multiple-output (MIMO) has proved that it tends to achieve a spectral efficiency of tens or even higher of bits/Hz. The Large Area Synchronized (LAS) space-time spreading codes have an interference free window (IFW) where both the auto-correlation and cross-correlation become zero. Combining MIMO with LAS codes can effectively take advantage of multipath delay spread and random fading. In this paper, we show that by using the turbo product codes (TPC) and space interleaving in such a system, even the simple decorrelating detection method can detect the multi-antenna signals in effect and achieve very high spectral efficiency with finite-complexity which is feasible to realize in practice
Keywords :
MIMO systems; antenna arrays; code division multiple access; correlation methods; product codes; signal detection; space-time codes; spectral analysis; spread spectrum communication; turbo codes; Large Area Synchronized space-time spreading code; code division multiple access; decorrelating detection method; interference free window; multiantenna signal detection; multipath delay; multiple-input-multiple-output system; random fading; space interleaving; spectral efficiency; spread spectrum communication; turbo product code; Autocorrelation; Decorrelation; Delay effects; Fading; Interference; MIMO; Multiaccess communication; Product codes; Transmitters; Transmitting antennas;
Conference_Titel :
Information Technology and Applications, 2005. ICITA 2005. Third International Conference on
Conference_Location :
Sydney, NSW
Print_ISBN :
0-7695-2316-1
DOI :
10.1109/ICITA.2005.302
