Abstract
A new adaptive reduced-complexity MLSE receiver based on per-survivor processing (PSP-MLSE) and a decision feedback equalizer (DFE) for GSM/EDGE system with 8PSK modulation is proposed. The initial channel impulse response (CIR) is estimated by the LS algorithm with a mid-amble and updated by the LMS algorithm during data transmission. The proposed scheme handles the first part of the sampled CIR by the PSP-MLSE and the rest by the DFE for complexity reduction. Instead of the conventional global DFE (decision per sample), the local DFE (decision per state/survivor) is suggested to reduce error propagation. A good tradeoff between performance and complexity, by retaining the PSP-MLSE for good performance and using the local DFE for intersymbol interference cancellation, is obtained. Computer simulations indicate that the PSP-MLSE with the local DFE is clearly superior to that with the global DFE, especially in severe ISI channels.
Original language | English |
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Title of host publication | 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001 |
Publisher | IEEE Institute of Electrical and Electronic Engineers |
ISBN (Print) | 0-7803-7244-1 |
DOIs | |
Publication status | Published - 2001 |
MoE publication type | A4 Article in a conference publication |
Event | 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2001 - San Diego, United States Duration: 30 Sep 2001 → 3 Oct 2001 |
Conference
Conference | 12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC 2001 |
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Abbreviated title | PIMRC 2001 |
Country/Territory | United States |
City | San Diego |
Period | 30/09/01 → 3/10/01 |
Keywords
- GSM
- data communication
- maximum likelihood estimation
- delay
- interference cancellation
- binary phase shift keying
- computer errors
- decision feedback equalizers