Low Complexity Successive Interference Cancellation for MIMO-OFDM Systems

Authors:

Abstract:

Layered architectures like theV-BLAST scheme are a promising candidate to exploit the capacity advantages of multiple antenna systems leading to practical wireless communication schemes with very high data rates. The combination with orthogonal frequency division multiplexing (OFDM), called MIMOâ€“OFDM, with per-antenna-coding is one of the most likely implementations of these multilayer architectures in frequency selective environments. In this paper, we present a novel, computational efficient implementation of successive interference cancellation (SIC) for coded MIMOâ€“OFDM. It utilises a parallelised version of the Sorted QR Decomposition (SQRD) to achieve the same optimised detection order for all subcarriers, in order to exploit the error correction capability of the forward error correction code within the SIC. In comparison to other schemes known from literature, our approach requires only a fraction of computational complexity with almost the same performance.

Document type:

Journal Paper

Publication:

August 2007

Journal:

European Transactions on Telecommunications (ETT)

Pages:

457-466

Volume:

Number:

Index:

285