| 2005 | GLOBECOM | Tagging-filter based blind MIMO equalization without signal permutation. | James Okello, Masao Ikekawa |
| 2003 | ISCAS | A study on the step size of cascaded adaptive notch filter utilizing allpass filter. | Yasutomo Kinugasa, Yoshio Itoh, Masaki Kobayashi, Yutaka Fukui, James Okello |
| 2003 | ISCAS | Blind adaptive equalizer based on locally generated sub-carrier. | James Okello, Masashi Mizuno, Hiroshi Ochi, Yoshio Itoh |
| 2002 | ICASSP | A high-throughput pipelined CMA equalizer with minimum latency. | Masashi Mizuno, Kenji Ueda, James Okello, Hiroshi Ochi |
| 2001 | ICASSP | A new unbiased equation error algorithm for IIR ADF and its application to ALE. | James Okello, T. Kinugasa, Yoshio Itoh, Yutaka Fukui, Masaki Kobayashi |
| 2001 | ISCAS | A new algorithm for adaptive notch filter with sub-band filtering. | Yasutomo Kinugasa, James Okello, Yoshio Itoh, Masaki Kobayashi, Yutaka Fukui |
| 2001 | ISCAS | A new unbiased online algorithm for equation error IIR ADF. | James Okello, Yasutomo Kinugasa, Yoshio Itoh, Yutaka Fukui, Masaki Kobayashi |
| 2000 | ISCAS | An adaptive notch filter for eliminating multiple sinusoids with reduced bias. | James Okello, Shin'ichi Arita, Yoshio Itoh, Yutaka Fukui, Masaki Kobayashi |
| 2000 | ISCAS | A new architecture for implementing pipelined ADF. | James Okello, Shin'ichi Arita, Yoshio Itoh, Yutaka Fukui, Masaki Kobayashi |