|
|
|
| A Subcarrier Grouping Approach and Detection for MIMO-OFDM Systems with GFDFR Space-Frequency Coding |
| Xu Xin①②; Cai Yue-ming①; Song Zhi-qun② |
| ①Institute of Communications Engineering, PLAUST, Nanjing 210007, China;②The 54th Research Institute of CETC, Shijiazhuang 050081, China |
|
|
|
|
Abstract In this paper, a subcarrier grouping approach for Group-wise Full-Diversity Full-Rate (GFDFR) coded MIMO-OFDM systems with virtual and DC subcarriers is proposed. A PDA-SD hard detection algorithm and a neighbor searching soft detection algorithm, which all have low complexities, are presented to decode the GFDFR code. A one-dimensional neighbor searching detection algorithm, which is based on the hard detection algorithm and can effectively reduces the detection complexity, is proposed. Simulation results show that the subcarrier grouping approach is robust and insensitive to the numbers of virtual and DC subcarriers and all the detection algorithms have better bit-error rate performance.
|
|
Received: 01 February 2007
|
|
|
|
|
|
|
|
|
2009, Vol. 31 
