Performance of TCM schemes over equalized channels
Hichem Besbes, Tho Le‐Ngoc · 2002
This paper presents a performance evaluation of TCM schemes over ISI channels with receivers using equalization. The asymptotic gain introduced by TCM coding schemes using the Ungerboeck's (1982) criterion is derived in taking into consideration the effects of the channel impulse responses. Based on an approximation of the asymptotic gain, the effectiveness of a TCM coding scheme using the Ungerboeck's criterion applied to a particular ISI channel can be assessed. Depending on the channel impulse response (CIR), a TCM scheme using the Ungerboeck's criterion can have an inferior performance as compared to the uncoded system.